【单选题】【消耗次数：1】
15.Man _____ die without air or water.
①
will
②
have to
③
must
④
should
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16.—What made more than 100 passengers die. --- ________the air crash in Russia.
①
Itwas
②
Therewas
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Thatwas
④
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②
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③
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③
fortunate
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①
mustn’ t you
②
don’ t you
③
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④
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①
A．门开了，谁想到进来的正是我们刚才谈论的人。
②
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③
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④
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①
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Why not
③
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④
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①
Because of
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④
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