I’d appreciate ______ if you would like to teach me how to use the new computer.
| A．that | B．you | C．it | D．this |
It was in the lab, ________ was taken charge of by Professor Curie, _______ they did the experiment.
| A．where; that | B．that; that | C．which; that | D．which; where |
The answer ________ the teacher,she asked the little boy to try a second time．
| A．disappointed | B．disappointing |
| C．being disappointed | D．having been disappointed |
There is a saying which _______like this:, “Still waters run ______.”
| A．goes; deeply | B．comes; deep | C．goes; deep | D．comes; deeply |
Chemical processes _______in the treatment of materials for clothes _______the environment badly in some countries nowadays．
| A．involve；damaging | B．involved；damaged |
| C．involving；damage | D．involved；damage |
.In the last ten years she _____ like this; she is killing her health.
| A．has worked | B．has been working | C．worked | D．is working |