-- Lisa was seen ______ an old man go across the street this morning. --What a kind girl she is! 
#44478
A
helping
B
helped
C
to help
D
helps
推荐题目
I won’t leave until my work _________ tomorrow morning.
#44825
A
will be finished
B
finishes
C
finished
D
is finished
Chinese ______by the largest number of people in the world now.
#44672
A
is spoken
B
is speaking
C
speaks
D
spoke
Another two months will be needed before the bridge _______.
#44397
A
completes
B
is completed
C
has completed
D
will be completed
The dictionary mustn’t ________ from the library.
#44684
A
take away
B
taken away
C
are taken away
D
be taken away