Who does homework , Tom, Jack or Bill—Bill.

_ your diet, it is easy to reduce

Do you know if Mr. Wu ______ to our school tomorrow ———-I’ve no idea. If he ______, everyone ______ very happy.

The conference aims to develop business and let people think about _____ they can have apositive influence on the planet．

Wethe opportunity to go to France, had it not been for Mary’s help.