[ Modal Verbs of Certainty and Possibility ]
He _____ studying because I didn’t see him outside.
A. can have been
B. must have been
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Vocabulary › View_______________you want my advice, I will be in my room.
A. Even if
B. Only if
C. In case
Third Conditional › View
If she ……………… to Greenland, she ……………… some igloos.
A. Had been, would have seen
B. Had been, had seen
C. Would have been, had seen