________ to overcome the difficulty，he works day and night．
| A．Determined | B．Determining |
| C．To determine | D．To be determined |
Li Ming is said ______ the experiment in the lab, but I can’t find him there.
| A．to have done | B．to do | C．to be doing | D．doing |
They live in a beautiful village, with many trees and flowers _______ it.
| A．surrounded | B．surrounds | C．surrounding | D．to surround |
– Is John coming by train?
– He should, but he _______ not. He likes driving his car.
| A．must | B．can | C．need | D．may |
– I rang you at about ten o’clock, but there was no reply.
– Oh, that was probably ________ I was seeing the doctor.
| A．when | B．why | C．what | D．that |
I feel uncomfortable each time I remember the situation _______Mary didn’t agree with me _________ the matter.
| A．that; at | B．in which; over | C．which; about | D．where; to |