The problem of global warming is serious. _____ , the sea levels have _____a little.
| A．As a consequence; risen |
| B．On the contrary; arisen |
| C．On the other hand; arisen |
| D．In other words; risen |
（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 |
I______ myself more－it was a perfect day.
| A．shouldn’t have enjoyed | B．needn’t have enjoyed |
| C．wouldn’t have enjoyed | D．couldn’t have enjoyed |
Eye doctors recommend that a child’s first eye exam____ at the age of six months old.
| A．was | B．be | C．were | D．is |
-----Excuse me, but could I trouble you for some change?
------_______.Will pennies do?
| A．I know | B．Never mind | C．I am sure | D．Let me see |
（2013·新课标Ⅱ卷)Since nobody gave him any help, he have done the research on his own.
| A．can | B．must | C．would | D．Need |