I visit a new country every year. By the time I……….fifty, I……….almost all the countries in the world. A. will be - will visit B. was - had visited C. am - will have visited D. am - visit
I visit a new country every year. By the time I……….fifty, I……….almost all the countries in the world.
A. will be - will visit
B. was - had visited
C. am - will have visited
D. am - visit