6. Last year a tunnel... 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. was... 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