问题

The patient’s son asked the doctor the question________his father could survive the big operation.[ ]

A:whether
B:if
C:that
D:what

正确答案是：

同类题型

Hangzhou and Anxi are widely _________ for the silk.

1It’s important __________.

May I go and play with Dick this afternoon，Mum—No，you can’t go out________your work is being done

Has he returned the book to our library—No. He has _________ it for one week.

Only when I left my parents for Italy how much I loved them.[ ]