问题补充:
.When she came out, Mary looked a bit tired because she the house.
A. cleaned
B. was
C. had cleaned
D. had been cleaning
答案:
A. cleaned
B. was
C. had cleaned
(答案→)D. had been cleaning
解析:可联系答.案.网客服索取。
时间:2018-11-19 17:51:41
.When she came out, Mary looked a bit tired because she the house.
A. cleaned
B. was
C. had cleaned
D. had been cleaning
A. cleaned
B. was
C. had cleaned
(答案→)D. had been cleaning
解析:可联系答.案.网客服索取。