(KHÔNG CẦN GIẢI THÍCH NHA GIÚP MK GHI ĐÁP ÁN ĐÚNG THÔI LÀ ĐC Ạ) 46. He/ start / play badminton /ten years / ago. A. He start playing badminton ten years ago. B. He started playing badminton ten years ago. C. He started play badminton ten years ago. D. He start to play badminton ten years ago. 47. If I /have/ wing/ I/ can / fly everywhere A. If I have a wing, I can fly everywhere B. If I had a wing, I can fly everywhere C. If I had a wing, I could fly everywhere D. If I have wing, I could fly everywhere 48. A lot / trees/ be / plant/ along the street/students/ now A. A lot of trees is being planted along the street by students now. B. A lot of trees are being plant along the street by students now. C. A lot of trees are being planted along the street by students now. D. A lot of trees are planted along the street students now. 49. They use/ go to school/ bike when they / be/ young. A. They used go to school by bike when they are young. B. They used to went to school by bike when they were young. C. They used to go to school by bike when they were young. D. They are used to going to school by bike when they were young. 50. She / teach her children/ play /piano/ 4 years. A. She has taught her children to play the piano for 4 years. B. She has taught her children to play piano since 4 years. C. She taught her children to play piano for 4 years D. She taught her children to play the piano for 4 years.