2. 外语
  3. They ______ to enter the building by the back door; however, the back door was locked.

They ______ to enter the building by the back door; however, the back door was locked.

admin2010-04-24  43
问题 They ______ to enter the building by the back door; however, the back door was locked.
选项 A、weren’t supposed
B、wouldn’t be supposed
C、were supposed
D、would be supposed
答案C
解析 动词时态。be supposed to do sth．意为“应该，被期望”，指本来应该发生但是却没有发生的事情。
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