根据句子意思写出已给首字母或汉语提示的单词，使句子表达更准确。

1．We waited for him for two hours，but he didn't a_________．

2．--Would you like to help me with my English?

--With p_________．

3．The story of Liang Shanbo and Zhu Yingtai is an a_________ Chinese legend．

4．We should try our best to help people in t_________．

5．It's n_________ for us to work hard at many subjects．

6．Look! The _________（村民）are working very hard in the field．

7．I'd like _________（工作）for the disabled people．

8．It _________（花费）me two hours to water the floors．

9．My sister is _________（感兴趣）in reading books．

10．Bob didn't _________（真地）like hanging out with us．

Hi, my name is Amy. I am a Grade 7 student, and I would like to tell you something about my class and myself.
There are ten classes in Grade 7.In each class, there are about forty students. I think that my class, Class 4 is the best(最好的).That is because all the students in my class work very hard and the teachers are all very nice to the students. But I am not one of the best students in the class.
I love reading, and I am very good at Chinese and English. I don’t find Maths very interesting, so I am not good at it. I want to work hard at it. My teacher, classmates and my parents would like to help me with my Maths.
【小题1】How many classes are there in Grade 7at Amy’s school?