The biggest problem for most plants, which ___ just get up and run away when threatened, is that animals like to eat them.
| A．shan’t | B．can’t |
| C．needn’t | D．mustn’t |
. The conference has been held to discuss the effects of tourism ______ the wildlife in the area.
| A．in | B．on | C．at | D．with |
The International Red Cross is ______ non-profit organization that cares for the wounded, sick and homeless in wartime, and victims of _____ natural disasters.
| A．the; the | B．a; the | C．the;不填 | D．a; 不填 |
We all do more speaking ___________, even when we have a break after class .
| A．now and then | B．by and by | C．step by step | D．more or less |
Zhang Hong is said___________by heart 2000 words up to now .
| A．that she has learned | B．to have learned |
| C．to learn | D．having learned |
They really have a great time too , designing everything , drawing the blue prints , ___________the angles and so on .
| A．looking out | B．taking out | C．finding out | D．figuring out |