根据短文内容,用括号内所给单词的适当形式填空

问题描述:

根据短文内容,用括号内所给单词的适当形式填空
they (have) four classes in the morning and two in the arter-noon.Bruno often (fly) kites with his friends.On sundays he often (do) his homework and helps her parents (do) some shopping.they are very happy

have
flies
does
to do或者do