My brother _____  to the ground while ____  his bicycle and hurt his leg .
#53802
A
falls; is he riding
B
fell; he was riding
C
fall; he is riding
D
felt; was he riding
推荐题目
The math problem is too difficult ,I can’t__________ .
#59122
A
work out it
B
work it out
C
work them out
D
put it out
Sam spends half an hour_____ TV every day.
#54739
A
to watch
B
watching
C
watch
D
watches
Robert often asks us ____________his Chinese, so his Chinese is much better than before.  
#53022
A
help him
B
to help him with
C
to help with
D
helps him with