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Whydon’tyoucalldirectoryenquiriesandaskthem?It

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问题详情:

Whydon’tyoucalldirectoryenquiriesandaskthem?It

Why don’t you call directory enquiries and ask them? It ________ a new number if it’s not in the book.


A. can be               B. could be                   C. must have been              D. must be

【回答】

D

知识点:虚拟语气与情态动词

题型:选择题

标签:WhyDon