Correct Answer: D

Rationale: 'Have to' is the correct choice as it fits the sentence structure. The sentence is in the past tense ('did we') and requires the infinitive form 'have to' to express the idea of necessity or obligation in the past. 'Has to' (Choice A) is incorrect as it is present tense, 'haven't' (Choice B) is a negative form and does not make sense in this context, and 'had to' (Choice C) would imply a past obligation that has already been fulfilled, which is not the intended meaning here.

Correct Answer: D

Rationale: In this sentence, 'Our' is the possessive pronoun that correctly indicates possession, making the sentence grammatically correct. The sentence implies that the screaming belonged to a group that includes the shopkeeper. Therefore, 'Our' is the appropriate choice. The other options ('We,' 'They,' 'Them') are incorrect as they do not convey possession as required in the sentence.

Correct Answer: B

Rationale: The correct word to fill in the blank is 'break.' In this context, 'break' refers to a pause or rest, which is what Dr. Capra needed after completing the intense surgery. 'Brake' (choice A) refers to a device used to slow or stop a vehicle. 'Brink' (choice C) means the edge or verge of something. 'Broke' (choice D) is the past tense of 'break' and is grammatically incorrect in this sentence.

Correct Answer: B

Rationale: 'Presents' is the correct choice here. The sentence requires a verb that indicates the condition appearing with a symptom. In medical terminology, when a condition 'presents' with a symptom, it means that the symptom is a noticeable feature or indication of the condition. Therefore, 'presents' is the appropriate verb to describe how the condition manifests itself with vertigo. The other options do not fit the grammatical structure of the sentence.

Correct Answer: B

Rationale: 'Spent' is the correct past tense of 'spend.' In this sentence, the action of spending time in the studio already happened while Steve was an apprentice, requiring the past tense 'spent.' 'Spends' is present tense, 'spended' is not a valid word, and 'spend' is present tense without matching the past context of the sentence.