It is quite often that the workers are always ________ by heat if they work outdoors for a long time in the hot summer afternoon.
| A．astonished | B．depressed |
| C．overcome | D．hit |
. 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 |
. My MP4 player isn’t in my bag. Where __________ I have put it?
| A．can | B．must |
| C．should | D．would |
. In crowded places like airports and railway stations, you __________ take care of your luggage.
| A．can | B．may |
| C．must | D．will |
. The teacher __________ have thought Johnson was worth it or she wouldn’t have wasted time on him, I suppose.
| A．should | B．can |
| C．would | D．must |
Every evening after dinner, if not ________ from work, I will spend some time walking my dog.
| A．being tired | B．tiring |
| C．tired | D．to be tired |