[ Past Tenses ]
What ________ when the explosion __________?
A. had you done, were occurring
B. did you do, was occurring
C. were you doing, occurred
Select your answer:

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Subject Verb Agreement; Indefinite PronounsTo Infinitive or GerundWill and Going toAdjective ClausePast Tense and Perfect TenseSimple and Continuous Present TensePassive Voice in Past Simple TenseAdverb of TimePresent Perfect and Simple Past TenseDirect-Indirect SpeechOther quiz:
Modal Verbs › ViewWhich modal verb is used to express a strong obligation?
A. Might
B. Would
C. Could
D. Must
Modal Verbs › View
Choose the transition for an additional reason: “Reading regularly improves vocabulary; ___, it helps reduce stress.”
A. Therefore
B. Moreover
C. However
D. Consequently
