xin lỗi mọi người em có ít điểm nhưng mong mọi người giúp em ạ 1. By the time you receive this letter, I _______ for the USA. a. have left b. will leave c. will have left d. am leaving 2. While I ________ along the road, I saw a friend of mine. a. was cycling b. has cycled c. cycled d. am cycling 3. By the time I __________ this report I will give you a ring. a. type b. will type c. have typed d. will have typed 4. While my mother ________ a film on TV, my father was cooking dinner. It was March 8th yesterday. a. watched b. was watching c. had watched d. watches 5. When I came, a party ______ in the hall. a. is being held b. had being held c. will be held d. was being held 6. When I came to visit her last night, she _________ a bath. a. is having b. was having c. has d. had 7. When we arrived at the restaurant, the others _________. a. left b. have left c. had left d. are leaving 8. I learned that the college _________ in 1990. a. found b. was founded c. founded d. had been founded 9. He said that he ________ a lot of money on advertising to expand his business. a. spends b. has spent c. spending d. had spent 10. The train _________ when we got to the station. a. just left b. just leave c. had just left d. will leave