—Who is singing in the next room? Is it Betty?
—It_________be her．She has gone to London．
A. must B．mustn’t C．can D．can’t
He________computer games when his parents left home．So he didn’t know where they were．
A. is playing B. plays C．played D：was playing
I could speak________French_______Chinese， but luckily I could talk with them in English．
A. both；and B. neither；nor
C．either；or D．not only；but also
We’ve talked a lot_________cars．What about trains?
A．aboutB．withC．ofD．in
Hurry up! If we miss _______ last bus，we’ll have to go home by _______ taxi．
A．the；the B．the；a C．the；不填 D．a；不填
假如你是李华，你们学校在开展建设绿色校园的活动。学校校刊英文版征集有关校园环境保护的文章。请你用英语写一篇短文谈谈同学们在校园环保方面的问题，你们应该做什么来解决这些问题以及建设绿色校园的重要性。
提示词语：liatter，lights，encourage，save，remind，clean，comfortable
提示问题：．What are students’ problems in protecting the school environment?
．What should you do to solve the problems?
．Why is it important to build a green school?
In our school，some students do not pay attention to environmental protection＿
