—Why didn’t you go to play football with us yesterday afternoon? —I _____my mother with the housework then. 
#42102
A
helped
B
was helping
C
had helped
D
have been helping
推荐题目
 I__________ Lucy at the bank the other day.
#40180
A
see
B
saw
C
was seen
D
seeing
Look at those clouds. It _____ rain
#42068
A
is going to
B
will
C
must be
D
can’t