题目内容
—Your father's back home now, _____ he?
—Yes, he _____ been at home for half an hour.
—Yes, he _____ been at home for half an hour.
[ ]
A. isn't, has
B. hasn't, has
C. hasn't, is
D. isn't, is
B. hasn't, has
C. hasn't, is
D. isn't, is
A
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