★ Modal Verbs
They built this huge temple 1000 years ago. This ______ a great civilization.
A. should have been
B. must have been
C. could have been
D. can’t have been
Preview next quiz:
If I hadn’t told her about him and his new girlfriend, she ______ have been waiting for him to call her forever, poor soul.
A. should
B. might
C. must
D. can
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