－Dirty water shouldn’t be poured into rivers.
－_______. It will cause pollution.
| A．Don’t say like this | B．Never mind | C．I agree with you | D．The same to you |
--What’s the result of killing the sharks?
--If the number of the sharks ______, the other ocean lives will be in danger as well.
| A．drop too little | B．drops too little |
| C．drop too low | D．drops too low |
If you want to understand a culture better, it is worth spending the time ______ about their costums.
| A．learning | B．to learn | C．learned | D．learn |
--Mum, may I play computer games for a while?
--As soon as all your homework ______, you can.
| A．will finish | B．finish |
| C．is finished | D．will be finished |
--Helen, would you please speak slowly? I can’t catch up with you.
--You ______ down very word, just the key words.
| A．needn’t to write | B．don’t need write |
| C．needn’t writing | D．don’t need to write |
During the Spring Festival, taking a plane usually ______ more money than usual.
| A．takes | B．pays | C．costs | D．spends |