--- 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
It’s nice to see you again. What        since we last met?
#100414
A
have you done
B
had you done
C
have you been doing
D
did you do
 --- Look at the black clouds. It ______ soon. --- Sure. If only we ______ out.
#104263
A
is raining; didn’t come
B
is to rain; won’t start
C
will rain; haven’t started
D
is going to rain; hadn’t come
A new bridge ______ across the river and it is expected to open next year.
#103448
A
was building
B
is built
C
will build
D
is being built