1.Nancy (be)_______to VN several times
2.They (not start)_________the project yet
3.The greens (be)__________to many countries in the word sofar
4.We (go) ____________to that village to do volunteer workseveral times
5.Our teacher (explain) _________ to us how to use the printeralready
6.My pen isn't here any more.Someone (take)___________italready
7.Mai (not finish) __________her homework yet
8.They (not see) ________the film Titanic yet
9.I (not see) __________ your brother yet
LÈM ƯN HẼY KÍU MỊU NHÓE
1. has been
2. haven't started
3. have been
4. have gone
5. has explained
6. has taken
7. hasn't finished
8. haven't seen
9. haven't seen
