Present Perfect

Lindsay _____ not been to France.

• has

• is

• have

_____ you finished your homework?

• Have

• Has

• Is

They___ gone to a rock concert.

• 's

• 'es

• 've

We _____ never eaten Mexican food.

• have

• has

• are

The children ________ the lost puppy.

• have find

• is finding

• have found

Carl's been a vegetarian _____ three years.

• since

• for

• after

I haven't worked _____ last December.

• since

• for

• by

She hasn't had a day off ___ three months.

• since

• for

• before