★ Grammar Modals
Climate change could _____ the survival of blue whales.
A. being threat
B. threaten
C. have been threatened
D. threat
Preview next quiz:
Match the first half to the correct second half of the sentence.
Ten o’clock is definitely too late for us to arrive at the dinner party.
A. They must be finished by then.
B. They will have finished eating by then.
C. They might be eating dinner.
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