a certain doubt among the people as to the practical value of the project．(D)
A．It has B．They have C．It remains D．There remains
Only after ___ your homework _________ watch TV.
| A．have you finished; you can |
| B．you have finished; can you |
| C．have you finished; can you |
| D．you have finished; you can |
She ____ an old friend of hers yesterday while she was shopping at the department store.
| A．turn down | B．deal with | C．took after | D．came across |
All possible means ____, but nothing can prevent the buildings ____.
| A．has tried; from being pulled down |
| B．have tried; from pulling down |
| C．has been tried; from pulling down |
| D．have been tried; from being pulled down |
Gun control is a subject _________ Americans have argued for a long time..
| A．of which | B．with which | C．about which | D．into which |
Such a grammar mistake is _____ among the beginners of English study.
5.
| A．regular | B．ordinary | C．general | D．common |