---Do you mind my sitting here, Tom? ---___________. It’s for our teacher, Mr Green.
| A．Not at all | B．All right |
| C．Better not | D．Never mind |
I’m sorry I’m late for work _______ the heavy traffic this morning.
| A．because | B．because of | C．if | D．there’s |
----The number of the tigers is getting __________. ---- I agree _______ you.
| A．more and more , to | B．smaller and smaller, to |
| C．smaller and smaller, with | D．more and more ,with |
The reserve is an important ______ area for the rare red-crowned cranes.
| A．live | B．alive | C．living | D．life |
You should speak as loudly as you can _____everyone hear you clearly
| A．to let | B．let | C．letting | D．lets |
I think ____necessary for us _____the birds.
| A．it , protect |
| B．its, to protect |
| C．it’s , protecting |
| D．it , to protect |