the flight to New York will be delayed is I’m especially worried about.A. If; whatB. Whe

问题补充：

the flight to New York will be delayed is I’m especially worried about.

A. If; what

B. Whether; that

C. When; that

D. Whether; what

答案：

A. If; what

B. Whether; that

C. When; that

(答案→)D. Whether; what

解析：考查名词性从句。Whether引导主语从句whether the flight to New York will be delayed.意为：去纽约的航班是否被推迟；what引导表语从句what I’m especially worried about.并在句中做宾语。