用所给阔括号里的词适当填空.
问题描述：
用所给阔括号里的词适当填空.
1.Look!The students _____(skate)_____(raise) money for charity
2.some of them _____(skate)for more than half a day.
3.I (not finish)the story-book yet.
4.The students are skateing there_____(raise) some money for charity
5.An hour has two_____(half)
答
are skating to raise
have skated
have not finished
to raise
halves