The students were ____ over the ____ problem, listening to the teacher with a ____
expression on their faces.
| A．puzzled; puzzling; puzzling | B．puzzled; puzzling; puzzled |
| C．puzzling; puzzling; puzzled | D．puzzling; puzzled; puzzling |
Friends have to learn to _____ annoying habits and to bear differences of opinion．
| A．put up with | B．come up with |
| C．keep up with | D．end up with |
The people's government took good care of the children, four fifths of _____ parents lost their lives in the Anti-Japanese War．
| A．which | B．whom | C．whose | D．them |
____ such a chance, why don't you have a try ?
| A．To give | B．Given | C．Having given | D．Giving |
My father _____ away for two months．I want to do something special for him when he comes back next week．
| A．will be | B．has been | C．was | D．had been |
If our time is usefully employed, it will _____ some useful and important products．
| A．turn out | B．refer to | C．look up | D．carry on |