----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 |
_____ good time we had in the park yesterday!
| A．How | B．What | C．What a | D．How a |