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题型：单选题
At present, a large number of tress ________ around the world．
- A.
are being cut down
- B.
are being cut across
- C.
is being cut down
- D.
is being cut up
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题型：单选题
It remains to be seen whether plastic ________ are good to the students though they are popular in big cities．
- A.
tractors
- B.
tracklayers
- C.
trackers
- D.
tracks
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题型：单选题
________ for their help, we would be in a very difficult position.
- A.
If it didn't
- B.
Had it not
- C.
Were it not
- D.
Even if
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题型：单选题
________ agriculture plays an important role, people don’t attach importance to education．
- A.
Where
- B.
That
- C.
In which
- D.
In where
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题型：单选题
They insisted on immediate help ________ to the areas that had suffered the greatest loss in the storm．
- A.
be given
- B.
being given
- C.
given
- D.
gave
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题型：单选题
Advertisements make up a large part of each issue of such teenager magazines, ________ with fashion and beauty advice．
- A.
all loaded
- B.
all are loaded
- C.
all loading
- D.
all to be loaded
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题型：单选题
This example shows that we can be really good at something when we follow ________ feels right．
- A.
that
- B.
what
- C.
we
- D.
it
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题型：单选题
You'd better not leave the classroom until your homework________.
- A.
will finish
- B.
has been finished
- C.
finishes
- D.
is finished
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题型：单选题
They collected some dry branches and ________ fire to them to cook their lunch.
- A.
set
- B.
lighted
- C.
caught
- D.
made
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题型：单选题
He wants to find a job in a food factory which ________ still
- A.
is; being built
- B.
is; building
- C.
is; to be built
- D.
has; been built
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