Phần 2 : Phần bài tậpGRAMMAR((( Unit 1+ 2 : Basic TensesExercise 1. Choose the most correct answer:I _______this film twice. A. see B. saw C. will see D. have seen –Peter, please help me do the washing up. – Sorry, Mum. I ______ TV. A. watch B. am watching C. had watched D. watchedThe farmers _____ in the field now. A. were working B. have worked C. worked D. are workingThe war _____ out three years ago. A. broke B. had broken C. has broken D. was breakingHe ______ a cup of coffee every morning. A. drinks B. drank C. is drinking D. has drunkShe ______ a lot of new books. A. had just bought B. has just bought C. buys D. boughtUp to the present, Nam_____ good work in his class. A. does B. has done C. had done D. didAt present, that author ______ a historical novel. A. is writing B. was writing C. has written D....