2. 职称英语
  3. They must ______for us; let’s hurry up.A、waitB、have been waitedC、waitedD、be w

They must ______for us; let’s hurry up.A、waitB、have been waitedC、waitedD、be w

游客2025-04-23  27
问题 They must ______for us; let’s hurry up.
选项 A、wait
B、have been waited
C、waited
D、be waiting
答案 D
解析 情态动词除了有时和动词的完成式构成谓语，表示“应当，想必已经”外，还可以和动词进行式构成谓语表示“应当正在，想必正在”。
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