Stamps ______ sending letters.
#45020
A
used to
B
are used to
C
are used for
D
are using
推荐题目
Many accidents_____ by careless drivers last year.
#44673
A
are caused
B
were caused
C
have caused
D
will cause
A new bridge from Zhongshan to Macao in five years.
#44382
A
are built
B
were built
C
have built
D
will be built
Waste paper mustn’t _______. We should keep our environment clean.
#44420
A
throw away
B
thrown away
C
be thrown away
D
been thrown away
---Did you go to Jim’s birthday party？ ----No, I .
#44949
A
haven’t invited
B
didn’t invite
C
am not invited
D
wasn’t invited