问题补充：
1.The biggest problem is that we are short of people2.Jim did well in Chinese wehn he was in Grade Seven3.we use the knife for cutting fruits4.Wendy is the tallest girl in her class5.I have nothing to
答案：
Being short of peiple is the biggest problem .
Jim was good at Chinese when he was in Grade Saven .
The knife is used for cutting fruits .
Wendy is taller than any other girl in her class .
I am free on the weekend .
======以下答案可供参考======
供参考答案1:
1.The biggest problem is that we lack people.
2. Jim was good at Chinese when he was in Grade Seven.
3. We use the knife to cut fruits.
4. Wendy is taller than any other girl in her class.
5. I do nothing on the weekend. Or I am idle on the weekend.
供参考答案2:
The biggest problem is the shortage of people
Jim was good at Chinese when he was in Grade Seven
We use the knife to cut fruits
Wendy is taller than other girls in her class
I am free on the weekend
供参考答案3:
此处略去一万字......自己想去吧.......
供参考答案4:
1. There are not enough people. This is a very big problem.
2. Mr. Wang is very strong. Mr. Zhang is not as strong as Mr. Wang.
3. Jim was good at Chinese in Grade Seven.
4. We use the knife to cut fruits.
5. There are several girls in Wendys class. She is taller than all the other girls.
6. I am free from Friday evening to Sunday evening.
