1. are - reach
2. comes
3. came - had left ( thì quá khú đơn )
4. has never flown ( thì hoàn thành )
5. have just decided -would undertake  ( thì hoàn thành )
6. would take
7. was : động từ to be
8. am attending - was attending
9. arrive - will be waiting
10. had lived : hoàn thành
11. cho mk hay nhất với 

1. In all the world, there (be) ___are_______ only 14 mountains that (reach) ____reach______above 8,000 meters.
2. He sometimes (come) _____comes_____ to see his parents.
3. When I (come) _____came____, she (leave) ___had left_______for Dalat ten minutes ago.
4. My grandfather has never (fly) _____flown_____ in an airplane, and he has no intention of ever doing so.
5. We have just (decide) __decide________ that we (undertake) ____would________ the job.
6. He told me that he (take) _____would take_____ a trip to California the following week.
7. I knew that this road (be) ____was______ too narrow.
8. Right now I (attend) _____am attending_____ class. Yesterday at this time I (attend) ____was attending_____class.
9. Tomorrow I'm going to leave for home. When I (arrive) ____arrive______at the airport, Mary (wait) ____will be waiting______ for me.
10. Margaret was born in 1950. By last year, she (live) _____had lived_____on this earth for 55 years.

#NOCOPY