摘要： Miss Li hopes that most of us will a key high school.
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Miss Li is teaching ___________the classroom and I am sitting ________ my friend.
A. in front of; in the front of B. behind; in the front of
C. in the front of; behind
The students were having their chemistry class. Miss Li was telling the children what water was like. After that, she asked her students, “What’s water?” No one spoke for a few minutes．Miss Li asked again，“Why don’t you answer my question? Didn’t I tell you what water is like?” 
“I’m sorry，children.” said the teacher，“Our water is getting dirtier and dirtier．That’s a problem.”
【小题1】The students were having their _______ class．
| A．English | B．Chinese | C．chemistry | D．maths |
| A．water | B．air | C．earth | D．weather |
| A．white | B．black | C．clean | D．clear |
| A．agreed with | B．wrote to | C．heard from | D．sent for |
| A．more and more | B．less and less |
| C．cleaner and cleaner | D．dirtier and dirtier |