—— Why? Tom, your shirt is so dirty! —— Mum, I _____ my storeroom downstairs。
#104641
A
cleaned
B
have worked
C
was cleaning
D
have been cleaning
推荐题目
 All visitors to this village_________ with kindness.
#100165
A
treat
B
are treated
C
are treating
D
had been treated
You____________ television. Why not do something more active?
#104341
A
always watch
B
are always watching
C
have always watched
D
have always been watching