—When will you return the book to me? —I’ll give it to you___________I finish it.
A. once B. until C. as soon as D. unless
I don’t know the teacher ______ is talking with Miss Wang.
A. what B. whom C. which D. who
Scientists have managed_________ robots walk and dance easily.
A. to make B. making C. makes D. to making
A lot of trees _____around here every year，and we can enjoy fresher air now．
A．were planted B．are planted
C．will plant D．are planting
书面表达
安全对每个人都很重要。为了进一步增强中学生的安全意识，提高自我保护能力，你校开展了以“安全”为主题的英语演讲比赛。请根据以下提示，以“Safety rules at school”为题写一篇90词左右的演讲稿，介绍你们在学校应该注意的安全准则。
提示：
1. 上、下楼梯(go upstairs or downstairs)不要拥挤；
2. 不要从楼上往下扔(throw)杂物；
3. 玩耍时不能使用刀等尖锐的(sharp)器械；
4. 在学校不抽烟、不喝酒。
Safety rules at school
Hello, everyone! It’s important for us to keep safe at school ______________________
_____________________________________________________________________Remember these rules, and we’ll be safe at school.
根据句意及所给首字母提示，补全句中所缺单词。
1.Li Bai wrote many famous p about mountains.
2.Dad used to s a lot, but he has given it up now.
3.Last night a piece of sad news made Mandy c .
4.Teachers should ____________ (教育) students to protect themselves.
5.The project was ____________（支持） by the government.
