函的内容不需要做到“一函一事”。这句话是否正确？（）

A.正确

B.错误

C.无所谓

根据汉语提示完成下列句子.

1. My sister became a____(兼职的)teacher in a middle school last year.

2. Hi, Lucy! I hear there is a              (花展)in the park. Let's go and have a look.

3. Her voice              (听起来像)the singing of birds.

4. Her elder brother____               (上了大学)this September.

5. His name is known____               (遍及各地)world.