Question

____ the flight to Beijing will be delayed is ____ I’m especially worried about. A．If; what .

____ the flight to Beijing will be delayed is ____ I’m especially worried about. A．If; what B．Whether; that C．When; that D．Whether; what

Answer 1

D

考查主语从句和表语从句。句意:是否去北京的航班回推迟是我特别担忧的事。第二空缺宾语故用what。所以选D。