One way to species under' threat of extinction - whatever the cause - is to remove them to zoos and parks and breed them there．
| A．betray | B．resist | C．preserve | D．dispute |
The boss looked very worried and demanded that the work________before we went home.
| A．wound be finished | B．was finished |
| C．must be finished | D．be finished |
I think you got _______ wrong end of the stick. It’s Tom rather than David who has________good nose for news.
| A．/; the | B．/; a | C．the; the | D．the; a |
----Mum,we are going mountain climbing this afternoon.
-----____________! Sometimes they’ll roll down the hillside.
| A．Watch your step | B．Watch out for stones | C．Sounds great | D．Have fun |
Watching TV is ________a kind of relaxation , and it also _______ our knowledge.
| A．not more than ; adds | B．more than ; adds to |
| C．no more than ; adds to | D．more than ; adds up to |
Children must be _________ to serve（服务） their country when they grow up.
| A．sentenced | B．preferred | C．educated | D．devoted |