-- 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
Stamps are usually used _____letters.
#44752
A
to sending
B
to send
C
for send
D
for sent
If the magazine is online, paper _______  .
#44536
A
won’t need
B
doesn’t need
C
won’t be needed
D
hasn’t needed