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______ the flight to New York will be put off is ______ I’m especially worried about.
A．Why; whatB．Whether; whatC．How; thatD．When; that
B
考察從句連詞的選擇。第一空為主語從句，從句中不缺少成分，根據(jù)句意可知，此處需要填寫是否的意思，第二空是表語從句，從句中缺少about的賓語，所以選擇what
,句意為這個去紐約的航班是否會被推遲是我特別擔心的。
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