The work was difficult, but Tom’s expression showed that he would finish it in time.
| A．stubborn | B．determined | C．concerned | D．surprised |
People’s attitudes towards gift giving may from country to country.
| A．adapt | B．shift | C．cover | D．vary |
The astronaut did many experiments in the spaceship, great help for knowing more about space.
| A．which we think it is | B．which we think is of |
| C．of which we think is | D．we think which is of |
It has been proved by the fact that watching violence on TV may cause children’s _____ behavior.
| A．informal | B．impressive | C．aggressive | D．normal |
Peter was so excited he received an invitation from his friend to visit Chongqing.
| A．where | B．that | C．why | D．when |
To his disappointment, the opinion he had stuck out wrong.
| A．to turn | B．to turning | C．to turned | D．to be turned |