问题

Why? Tom, your shirt is so dirty!— Mum, I _____ my storeroom downstairs。
A:cleaned
B:have worked
C:was cleaning
D:have been cleaning
B:have worked
C:was cleaning
D:have been cleaning
正确答案是:
同类题型
He is ________ a friend to me; he is in a way my English teacher.
下列特殊句式分类正确的一项是( )①南冥者,天池也 ②奚以知其然也 ③野马也,尘埃也,生物之以息相吹也 ④覆杯水于坳堂之上 ⑤之二虫又何知 ⑥《齐谐》者,志怪者也 ⑦奚以之九万里而南为 ⑧而莫之夭阏者
.–Where is your father –He ________to Shanghai. He has ________ Pudong since last Friday.
We felt _____ at the _____advertisements while watching TV programs.