题目内容：

根据所给动词的适当形式填空，字数不限。

1.It usually takes Mum half an hour _______ (cook) supper for us.

2.--Mum, what do you want to eat?    ---What about       (点) some beef and rice?

3.Where are the boys in our class?  They __________(plan) a football game.

4.This little boy sometimes practises _________ (play) the piano at home.

5.The number of the girl students in Class 1 __________(not be) 25,but less than 20.