21. Overpopulation causes a lot of problemms, ………………? A. isn’t it B. doesn’t it C. do they D. don’t they 22. Let’s go to the zoo, ……………….? A. will we B. shall we C. don’t we D. do we 23.Tom and Jerry is an ________ movie for everyone. A. entertained B. entertain C. entertaining D. entertainment 24.I don’t really like romantic movies because they are very _______. A. moved B. moving C. move D. movement 25.I am going to Rio Carnival to _______ performers dance. A.watch B. watching C. watched D. to watch 26.My daughter felt________at my gift on her birthday. A. surprising B. surprised C. surprise D. surprisingly 27.Be_______! A car is coming! A. careless B. carefully C. carelessly D. careful 28.It is not________to pass the red traffic light. A. dangerous B. safe C. safety D. danger 29.How far is it from Mai’s house to school? – _________. A. It’s about 200 meters. B. It’s next to my house. C. It’s in the center of the city. D. It’s OK! 30.There are many_______on the street: cars, buses, bikes, motorbike. A. vehicles B. transport C. engines D. machines 31.She spent all day_______with her children. A. play B. to play C. played D. playing 32.If people ________ the rules, there are no more accidents. A. follow B. take care of C. forget D. remember 33.How about going cycling round the lake _______ Saturday? A. in B. at C. for D. on 34.Oanh says that it’s unhealthy to ______. A. cycle B.swim C. walk D. play games 35. Cyclist and motorist have to wear a ___ when they ride a motorbike. A. cap B. mask C. helmet D. hard that 36. He forgot to give a ___ before he turned left and got a ticket. A. hand B. signal C. sign D. light 37. All of us have to obey _______ strictly. A. traffic B. traffic rules C. traffic jam D. regular 38. We should wait for the traffic lights _____________ before we cross the street. A. turn yellow C. turn green B. to turn yellow D. to turn green 39. Drivers have to ______ your seatbelt whenever they drive. A. tie B. fasten C. put on D. put 40. Linh used to __________ jigsaw puzzles in his spare time. A. do B. does C. doing D. did