It’s hard to avoid mistakes. _____ we realize our mistakes and do our best to correct them, that’s all right.
| A．As if | B．As long as | C．Even if | D．In order that |
But for the leadership of our Party and our Government, we __________ these splendid results.
| A．have achieved | B．shouldn’t have achieved |
| C．should have achieved | D．would achieve |
John’s pale face suggested that he ______ill, and his parents suggested that he ______a medical examination.
| A．be, should have | B．was, have | C．should be, had | D．was, has |
It is vital that we _____ act out at once to protect the environment.
| A．would | B．should | C．will | D．can |
—Any information about your son?
—No. If only I ______ those tough words to him.
| A．didn't say | B．hadn't said |
| C．shouldn't have said | D．couldn't have said |
---Your sister nearly _______ all her spare time to her study during the three years.
----That's right， or she ________ the first place in her school in the College Entrance Examination.
| A．devoted; wouldn't have taken | B．spent; wouldn't have taken |
| C．had devoted; hadn't taken | D．had spent; couldn't take |