John seemed puzzled about _____ the question meant.
| A．how | B．why | C．what | D．Which |
_________ is a growing world problem, and nowadays the United Nations and its member countries _________hard to deal with it．
| A．Desertification; are working | B．Desertified ; worked |
| C．Desert; work | D．Desertification; have worked |
I don’t like the way ___________ he talked to his mother.
| A．that | B．which | C．in that | D．what |
I’m sorry, but I didn’t see how we can get all this work you assigned_______ by next Tuesday.
| A．having done | B．done | C．being done | D．to do |
She left the city, ________ never to return.
| A．determined | B．to determine | C．determining | D．having determined |
The film is well worth _________.
| A．seeing | B．to see | C．of seeing | D．seen |