9. “Do you have any questions ________ clear to you?” the teacher asked.
| A．which are not | B．that isn’t | C．not to | D．To |
This box is so heavy that he cannot lift it. ________, he is only a ten-year-old child.
| A．In all | B．Above all | C．At all | D．After all |
In this country, coalelectricity.
| A．is used to produce | B．is used to produced |
| C．is used to producing | D．used to produce |
Mike along with his mother _______ to blame for the mistakes they had made.
A. is B. was C. are D were
I shall never forget those years ____ I lived in the farm ___ you visited last week.
| A．when; where | B．which; which | C．when; which | D．which; where |
Do you know the girl with ________ father I talked for the whole afternoon last Friday?
| A．who | B．whom | C．whose | D．that |