giải thích giúp e 2. I just a telegram to say that my poor friend is badly ill again. A. had B. have had C. was having D. has been having 3. I Ann at her father’s house twenty years ago and her ever since. A. met/ have known B. was meeting/ knew C. met knew D. have met/ was working 4. Higher education in the US in 1636 when the first colonists Harvard College. A. has began/ founded B. began/ have founded C. began/ founded D. was beginning/ have founded 5. When Jack me, I a letter. A. was phoning/ wrote B. phoned/ has been writing C. phoned/ was writing D. has phoned/ was writing 6. I my report when you entered the hall. A. made B. have been making C. was making D. have made 7. They the new words yesterday. A. learnt B. have been learning C. have learnt D. were learning 8. She this exercise yesterday at 8 o’clock. A. wrote B. has written C. has been writing D. was writing 9. My mother often morning exercises. A. do B. does C. doing D. has done 10. She some cakes yesterday at 2 p.m. A. make B. has been making C. has made D. was making