-- 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
The monkey was seen _________off the tall tree.
#44572
A
jump
B
jumps
C
jumped
D
to jump
—I usually watch TV till 11 o’clock in the evening.—Really ? Are you __________?
#44891
A
allowed to stay up
B
allow to stay up
C
allowing staying up
D
allowed stay up
 Dad, my computer is broken. Must it _____ now?
#44599
A
is repaired
B
has been repaired
C
be repaired
D
has repaired