一、写出下列单词的现在分词：
Play___ sit___ buy___ begin___ take___ listen___
Sing___ swim___ put___ have___ see____ shop___
Stop___ dig____ run____
二、按要求改写句子
1. The boy was playing basketball.
否定句：____________________________
一般疑问句：_________________________
肯定回答：__________________________否定回答：______________________
2.She was closing the door now.
否定句：____________________________
一般疑问句：_________________________
3.I was doing your homework.
否定句：____________________________
一般疑问句：_________________________
.The Young Pioneers were helping the old woman.
否定句：____________________________
一般疑问句：_________________________
三、用过去进行时完成下列句子:
1.What_________you__________(do)?
2.I_____________(sing) an English song.
3.What________he____________(mend)?
4.He______________(mend) a car.