题目内容：

VII.用括号内所给单词的适当形成填空。(5分)

1.Children should learn to do their homework by __________ (they).

2.As we all know, September is the __________ (nine) month of the year.

3.Ann is so clever that she can work out the math problem __________ (easy).

4.We should start a good habit like brushing our__________ (tooth) twice a day.

5.Mary is a little __________ (thin) than her sister Lucy and they both like wearing beautiful dresses.