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
网友回答
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。