________ I can’t understand is ________ he wants to change his mind.
| A．that; that | B．what; why | C．which; what | D．what; 不填 |
I want to know _____ .
| A．when will he come back | B．when he will come back |
| C．when he comes back | D．when is he coming back |
Is it the country ______ you studied ______ you are going to visit next week?
| A．in which; which | B．where; that | C．that; that | D．which; that |
The exam was very difficult but everyone ______ pass.
| A．had to | B．would | C．could | D．was able to |
— I hear you have written a novel?
— Yes, the book ____ come out in a month or so.
| A．can | B．must | C．should | D．would |
You must apologize ______ your mother ______ your rudeness.
| A．to; to | B．for; to | C．to; for | D．for; for |