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 Im 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：考查主语从句和表语从句：句意：是否去纽约的航班要被推迟是我特别担心的，第一空填whether，连接主语从句，第二空填what，连接的是宾语从句，what在宾语从句中做宾语，选D.