【语法点击】
1．v．-ing
【实战演练】
Ⅰ．题目略
1．was； sleeping； got
2．was cooking； was washing
3．was sweeping； left
4．were having； came
5．was driving； rained
6．were playing； saw
7．was； working
8．was selling； found
9．was； writing
10．was reading； knocked
Ⅱ．题目略
1．While 2．while 3．when 4．while 5．when
6．While 7．when 8．when 9．when 10．when