We are wondering ________ we can prevent people from polluting the earth.
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A
who
B
that
C
whether
D
what
推荐题目
The boss refused to sell the car for he thought was not satisfactory.
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A
what
B
that
C
which
D
how
Can you tell me in the future?
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A
how life will be like
B
how will life be like
C
what life will be like
D
what will life be like
----What did Bob ask you just now?----He wanted to know how long __________when I reached the cinema.
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A
had the film been on
B
the film had started
C
the film had been on
D
had the film ended
—Excuse me. Can you please tell me ______? —Sure. There’s a bookstore on River Road.
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A
how can I save money
B
how I can save money
C
where I can get some science books
D
where can I get some science books
（2014年北京市西城区高三5月二模试题）31. A person who has never tasted bitter won’t know ______ sweet is.
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A
which
B
what
C
when
D
why