Stamps ______ sending letters.
#45020
A
used to
B
are used to
C
are used for
D
are using
推荐题目
The new teaching building ________ before the new term begins.
#44681
A
must be finished
B
must finish
C
must finished
D
must being finished
– Will you go to Mr. Wang’s party? – I will if I ________.
#44574
A
am invited
B
have invited
C
will be invited
D
am inviting
In many places in China, the old over 90         not only by their family but also by the government.
#44960
A
is taking good care
B
are taken good care of
C
is taking good care of
D
are taken good care
It’s said that ______of the water around the world___ polluted. 
#44439
A
two third , has
B
two thirds, have
C
two third, are
D
two thirds, is