Unit 1单元测试题. 单项选择(每小题1分， 共15分)从A、B、C、D四个选项中选择可以填入空白处的最佳答案。( )21. What did you buy yesterday morning?I bought umbrella.A. on; a B. 不填; a C. on; an D. 不填; an( )22. Last Sunday we didnt go out the rain.A. because of B. because C. in front of D. before( )23. Who taught you to play the guitar?No one. I learnt it .A. me B. my C. mine D. mysel
