Let ______ clean the classroom. （   ）

A．we

B．us

C．is

将下列单词去掉一个字母成为另一个单词，并写出中文意思。
1. know _________ 2. many _________ 
3. your _________ 4. she _________ 
5. this _________ 6. ball ________

要表达你有十六支蜡笔，英文怎么说？(   )

A．You have sixteen crayons.

B．I have sixteen crayons.

选出下列句子中有误的一项，并在横线上改正。
【小题1】It’srainhard now. （________）    ____________
A    B C
【小题2】Everything around weis nature. （________）    ____________
A    B  C
【小题3】We feel happy to beclose nature. （________）    ____________
A B C
【小题4】We can’t live without water and air. （________）    ____________
A B C

These are Betty’s books. ____________, please. (   )

A．Give it to her

B．Give them for her

C．Give them to her