Unit 11How was your schooltrip?. 单项选择(每小题1分，共10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。( ) 16. We learned a lot _ animals in the zoo. A. in B. with C. about D. for ( ) 17. I want to know _ to make a model plane. A. who B. where C. what D. how ( ) 18. I _ a student last year but now I _ a teacher. A. am; am B. was; am C. am; was D. was; was( ) 19. His uncle is good at farming. He works on a _.A.
