Nissan's plants in Zhengzhou and Guangzhou, ________ operate in cooperation with Dongfeng Motor Corp., remained closed.
| A．which | B．who |
| C．that | D．whose |
_________ to go abroad made him sad the whole day.
| A．Tom’s being not allowed | B．Tom was not allowed |
| C．Tom’s having not been allowed | D．Tom’s not being allowed |
Attention__________ on his painting, he even didn’t notice me come in.
| A．fixing | B．was fixed | C．which fixed | D．fixed |
My head-teacher helped me a lot when I was in trouble. I do wish I could do something for him__________ one day.
| A．in turn | B．in common | C．in return | D．in theory |
To come back before Sunday, I have made a few minor ________ to the schedule of my trip.
| A．adjustments | B．arrangement | C．adoptions | D．applications |
--- He looks so tired. What’s wrong?
--- Nothing serious. He just stayed up last night, ___________his papers.
| A．to prepare | B．having prepared | C．prepared | D．preparing |