Don’t（）this newa to the public until w

1、（）are used to ensure that ships don’t

（）are used to ensure that ships don’t discharge oil when pumping out oily water from any oil contaminated space.ABoilerBIncineratorCOily water separatorDSewage treatment unit

2、Not until______ the whole thing to him

Not until______ the whole thing to him ______that he was wrong.A had I explained, he realizedB had I explained, that he realizedC I had explained, that he realizedD I had explained, did he realize

3、Some people who don’t like to talk muc

Some people who don’t like to talk much are not necessarily shy；they _____ just be quiet people．AmustBmayCshouldDwould

4、Don’t you think ___ important to prote

Don’t you think ___ important to protect our earth?A thatB howC itD this

5、We are at your service. Don’t to turn

We are at your service. Don’t to turn to us if you have any further problems.A beg B hesitate C desire D seek

6、Don't（）on the past --- try to be more

Dont（）on the past --- try to be more positive.AthinkBstartleCdwellDlive