Generally，students’ inner motivation with high expectations from others________essential to their development.
| A．is | B．are |
| C．was | D．were |
He ________ in a foreign trade company for five years, but he now is a volunteer teacher in a village.
| A．had worked | B．worked | C．works | D．has worked |
The price of food is _________ this year than that of last year.
| A．8% high | B．8% as high | C．8% higher | D．8% as higher |
Will future scientific discoveries ______ for us to live a much longer life?
| A．be made possible | B．make possible |
| C．make it possible | D．be made it possible |
In the meeting, the professor expressed his thanks for the aid he _________ from his students.
| A．received | B．was received | C．have received | D．had received |
______ in her most beautiful skirt, the girl tried to make herselfat the party.
| A．Dressed; noticed | B．Dressing; noticed |
| C．Dressed; noticing | D．Dressing; being noticing |