--- Why? Tom, your shirt is so dirty! --- Mum, I ______ my storeroom downstairs.
#104102
A
cleaned
B
have cleaned
C
was cleaning
D
have been cleaning
推荐题目
As time ________ on, Sally began to wonder if Bruce ________ Bilks’new poem called Tabled’Hute. 
#104780
A
has gone; had read
B
went; has read
C
goes; has read
D
went; had read
---- How about your last weekend?---- It was boring. I______ anything.
#100247
A
can’t do
B
hadn’t do
C
haven’t do
D
didn’t do
I___there little more than a week when I set to work with the scientist.
#104067
A
would be
B
have been
C
had been
D
will be
Whenever Steve sang in the shower, his voice _______ throughout the house.
#100876
A
has rung
B
would ring
C
was ringing
D
had rung