1. 根据句意，从方框中选择恰当的单词填空，有的需要变换形式。

include，condition，adult，excite，weigh

1. （1） My car is old, but it is in very good．
3. （2） The farmerthe stone in his hand．It felt like it was 3 kg．
5. （3） Mark's heart is beating fast with．
7. （4） The class of twenty pupilsseven girls．
9. （5） Tickets are 30 yuan forand 15 yuan for children．