— Why? Tom, your shirt is so dirty! — Mum, I __ my storeroom downstairs。
#104430
A
cleaned
B
have worked
C
was cleaning
D
have been cleaning
推荐题目
At this time next week ______________ the English Channel.
#100500
A
I’ll cross
B
I’ll be crossing
C
I’m to cross
D
I’m going to cross
 It’s obvious that she ______ him for a long time.
#103562
A
has adored
B
adored
C
is adoring
D
has been adoring.
I should very much like to have gone to that party of theirs, but _____. 
#104657
A
I’m not invited
B
I was not invited
C
I have not been invited
D
I had not been invited