问题

They ________ to enter the building by the back door; however, the front door was locked
A:are supposed
B:aren’t supposed
C:weren’t supposed
D:were supposed
B:aren’t supposed
C:weren’t supposed
D:were supposed
正确答案是:
同类题型
一What do you think of the house, dear—_________I can’t find a better one.
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ildren, ________ had played the whole day long,were worn out.
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