[ Tenses ]
______ while the teacher was explaining the activity.
A. They were taking
B. They will be talking
C. They are talking
D. They would talk

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Grammar › ViewA wildlife expert is scheduled to give a talk on the _________ that the factory has had on the surrounding forest.
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Verb Tenses › View
Which verb is used to indicate an action or state of being happening in the future?
A. walked
B. moved
C. will
D. shall