1 What are you going to do
2 How many boys are there in your class
3 Your school is nicer than ours ( 注：ours = our school )
1 clean（ 祈使句：动词原形开头）
2 will play / am going to play（ 一般将来时）
3 to have（ WANT TO DO STH 固定用法）
4 are flying （ 现在进行时）
5 took （一般过去时）