We will work ____ we are needed.
| A．whenever | B．because | C．since | D．wherever |
________ around our new dormitory,the foreigners were taken to visit our canteen,which lies behind.
| A．Showing | B．Having shown |
| C．Being shown | D．Having been shown |
If we throw away too much waste and can’t keep good ecosystem,we _________ our future.
| A．must have destroyed | B．could be destroying |
| C．may be destroying | D．must destroy |
—_________ he come to see you as he promised?
—Of course,please and I’d rather he _________ me the truth.
| A．Shall;told | B．Should;will tell |
| C．Can;covers | D．Will;informed |
You _________ be hungry yet;you had a big cake only an hour ago.
| A．may not | B．mustn’t | C．can’t | D．needn’t |
—Did you visit the famous cultural relics last month?
—No,we _________ it,but we spent too much time shopping.
| A．could have visited |
| B．must have visited |
| C．can’t have visited |
| D．shouldn’t have visited |