题目内容
—I went to your house at about ten last night, but you weren't in.
—I ________ regular exercises at the club.
[ ]
A.did
B.had done
C.was doing
D.had been doing
答案:C
解析:
解析:
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题目内容
—I went to your house at about ten last night, but you weren't in.
—I ________ regular exercises at the club.
[ ]