Explanation: The correct answer is b) studies. Here’s why: Explanation: Sarah is a third-person singular subject. In the simple present tense, for third-person singular subjects (he, she, it, Sarah), the verb typically takes an -s or -es ending. The base form of the verb is study. For verbs ending in a consonant + y, we change the y to i and add -es to form studies. Verb Forms: study (base form) is used with I, you, we, they, and plural subjects. studies is used with he, she, it, and third-person singular subjects like "Sarah". So, the correct sentence is: Sarah studies English at the university.

Explanation: The correct answer is c) We are watching a movie. Here’s why: Explanation: The present continuous tense is used to describe actions that are currently happening at the moment of speaking or actions that are ongoing. The present continuous tense is formed using the present tense of the verb "to be" (am, is, are) followed by the -ing form of the main verb. Analyzing the Options: a) She sings beautifully. This is in the simple present tense, describing a habitual action or a general truth. b) They will arrive tomorrow. This is in the simple future tense, describing an action that will happen in the future. c) We are watching a movie. This is in the present continuous tense. It uses the present tense of "to be" (are) and the -ing form of the verb "watch," indicating that the action is happening right now. d) He finished his homework. This is in the simple past tense, describing an action that was completed in the past. So, the correct sentence in the present continuous tense is: We are watching a movie.

Explanation: The correct answer is b) They have visited Paris twice. Here’s why: Explanation: The present perfect tense is used to describe actions or events that have happened at some point in the past but are relevant to the present or have an impact on the present. It is formed using the present tense of the verb "to have" (have/has) followed by the past participle of the main verb. Analyzing the Options: a) He eats lunch at 12 PM every day. This is in the simple present tense, describing a habitual action. b) They have visited Paris twice. This is in the present perfect tense. It uses the present tense of "to have" (have) and the past participle of the verb "visit" (visited), indicating that they have visited Paris at some unspecified times in the past. c) She will go to the party tonight. This is in the simple future tense, describing an action that will happen in the future. d) We walked to the park yesterday. This is in the simple past tense, describing an action that was completed in the past. So, the correct sentence in the present perfect tense is: They have visited Paris twice.

Explanation: The correct answer is b) He goes to school by bus. Here’s why: Explanation: a) I am not liking pizza. This sentence is incorrect because "like" is a stative verb, and stative verbs are typically not used in the present continuous tense. The correct form should be "I do not like pizza." b) He goes to school by bus. This sentence is correct. It is in the simple present tense and describes a habitual action. c) They was at the store. This sentence is incorrect because the subject "they" is plural, and the verb should be "were" instead of "was." The correct form should be "They were at the store." d) She doesn't works on weekends. This sentence is incorrect because the verb form "works" should be in its base form "work" after "doesn't." The correct form should be "She doesn't work on weekends." So, the true statement is: He goes to school by bus.

Explanation: The correct answer is c) sleeps. Here’s why: Explanation: The cat is a third-person singular subject. In the simple present tense, for third-person singular subjects (he, she, it, the cat), the verb typically takes an -s or -es ending. Verb Forms: sleep (base form) is used with I, you, we, they, and plural subjects. sleeps is used with he, she, it, and third-person singular subjects like "the cat". Analyzing the Options: a) sleeping This is the present participle form, used for the present continuous tense, not suitable here. b) sleep This is the base form, used with I, you, we, they, and plural subjects, not correct for third-person singular in simple present tense. c) sleeps This is the correct form for third-person singular subjects in the simple present tense. d) slept This is the past tense form, not suitable for a sentence in the present tense. So, the correct sentence is: The cat sleeps in the garden.

Explanation: The correct answer is c) He will visit his grandparents next week. Here’s why: Explanation: c) He will visit his grandparents next week is not in the present tense; it is in the future tense. The future tense is used to describe actions that will happen at a later time. Analyzing the Options: a) She writes a letter every day. This sentence is in the simple present tense, describing a habitual action. b) They are swimming in the pool. This sentence is in the present continuous tense, describing an action happening at the moment of speaking. c) He will visit his grandparents next week. This sentence is in the future tense, describing an action that will happen in the future. d) We play football on Sundays. This sentence is in the simple present tense, describing a habitual action. Therefore, the sentence that is not in the present tense is: c) He will visit his grandparents next week. It is in the future tense.