kèm giải thích nha 1.I will call you before I ................... over. A. come B. will come C. will be coming D. came 2. After she graduates, she ................... a job. A. got B. will get C. had got D. get 3. When I ................... him tomorrow, I will ask him. A. saw B. have seen C. will see D. see 4. As soon as it ................... raining, we will leave. A. stops B. stop C. had stopped D. stopped 5. By the time he comes, we will have already ................... A. leave B. leaving C. left D. leaves 6. Whenever I ................... her, I say hello. A. see B. will see C. will have seen D. saw 7. The next time I go to New York, I am going ................... a ballet. A. seeing B. see C. saw D. to see 8. I will never speak to him again so long as I ................... A. lives B. will live C. am living D. live 9. By the time Bill ................... to bed tomorrow, he will have had a full day and will be ready for sleep. A. had gone B. will go C. goes D. went 10. As soon as I finish my report, I will call you and we ................... out for dinner. A. went B. will go C. will have gone D. go 11. By the time I return to my country, I ................... away from home for more than three years. A. would be B. will have been C. will be D. am 12. After he ................... breakfast tomorrow, he will get ready to go to work. A. will have had B. has C. will be having D. have 13. As soon as he finishes dinner, he ................... the children for a work to a nearby playground. A. will take B. takes C. will be taking D. took 14. When Bill gets home, his children ................... the yard. A. played B. will play C. will be playing D. play 15. He will work at his desk until he ................... to another meeting in the middle of the afternoon. A. went B. go C. will go D. goes