问题

idn’t wait for Mr. Smith last night,did you—Yes, but we ________. He didn’t returnhome at all.
A:don't have to
B:needn't have
C:didn't need to
D:should have
B:needn't have
C:didn't need to
D:should have
正确答案是:
同类题型
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Same, _____ is you mother—Mm…she’s in my room, dad.
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