Check carrots，potatoes, onions and any other vegetables_____ and immediately use or throw away any which show signs of rotting.
| A．in demand | B．in store | C．on loan | D．on sale |
Once again he didn’t hand in his homework _____ he had been given enough time to do it．
| A．in case | B．as though | C．so that | D．even though |
---They live on a busy road． --- There ______ be a lot of noise from the traffic．
| A．must | B．may | C．would | D．could |
．_____ the chapter four times, I finally understood the author's theory．
| A．Reading | B．Having read | C．To read | D．Read |
Ann ______ here any more．She left last month．
| A．won't work | B．doesn't work | C．hasn't worked | D．isn't working |
The conference aims to develop business and let people think about _____ they can have a
positive influence on the planet．
| A．why | B．that | C．what | D．how |