题目内容：

用括号内所给动词的适当形式填空.   

1.When I came into the classroom，Mr．Li          (clean)the blackboard．

2.The boy found a purse          (1ie)on the ground and picked it up．

3.Would you like          (have)a try?

4.Tina hopes she can          (invite)to Mary's birthday party．

5.Mr.Wang finds stamps fascinating．He          (collect)them for many years．