Stamps are usually used _____letters.
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A
to sending
B
to send
C
for send
D
for sent
推荐题目
.The school meeting ________ once every two weeks in the concert hall.
#44390
A
is held
B
was held
C
will be held
D
has been held
 To make our city more beautiful ,rubbish ______ into the river.
#44541
A
must throw
B
can’t throw
C
needn’t be thrown
D
mustn’t be thrown
The windows          after school is over.
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A
usually close
B
usually closed
C
are usually closed
D
are usually closing
The children ______ not to play with the fire.
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A
are often told 
B
tell 
C
are telling 
D
told
The young man was often seen _____ by the lake.
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A
to draw
B
to drawing
C
draw
D
drew