（2013·大纲卷）Since nobody gave him any help, he have done the research on his own.
| A．can | B．must | C．would | D．Need |
If you often go to a gallery, it ______ well change forever the way you look at art.
| A．may | B．should | C．will | D．must |
--- We will take the conditions into careful account ______ you have attached to this contract.
--- Thanks. Hope for further cooperation.
| A．as | B．which | C．where | D．what |
Price continued to rise ______ pay was still low, with the result ______ the government became increasingly unpopular.
| A．when; that | B．while; which | C．when; which | D．while; that |
Cultural exchange ______ better understanding between people in different countries.
| A．allows for | B．calls for | C．makes for | D．goes for |
How long ______ we take part in the college entrance examination?
| A．is it since | B．will it be before | C．is it when | D．will it be since |