His mother doesn’t ________ of her going to study in the United States alone.
| A．allow | B．agree | C．prove | D．approve |
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 |
He _________ desperately in vain for something to say to break the silence.
| A．thought about | B．cast about | C．talked about | D．set about |
I doubt ____________all the people invited will come to attend the ceremony in such bad weather.
| A．whether | B．that | C．how | D．what |