[ Tenses of Verbs ]
The doctor _______________ a critical operation right now.
A. has been performing
B. was performing
C. is performing
Select your answer:
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Tenses › ViewWhen I was young, I take dance lessons..
A. used to
B. would
C. was going to
Grammar and Verb Tenses › View
What verb tense is used to express an action that happened before another past event?
A. Present perfect tense
B. Future perfect tense
C. Past perfect tense
D. Simple past tense