6. last year a through the mountain. a. had been built b. was built c. built d. is built 7. now a new railway between the two cities. a. is being built b. was built c. will have been built d. is building 8. the meeting just … . a. finished b. has been finished c. had been finished d. is ……. finishing 9. business letters …… usually …… on special forms. a. were …… written b. will …… be written c. have …… been written d. are …… written 10. the rope …… with a knife. a. was cut b. were cut c. cuts d. will cut