Present Perfect Simple vs. Past Perfect Simple

Tony knew Istanbul so well because he _____ the city several times.

• have visited

• has visited

• had visited

• had been visited

Had Susan ever studied Thai before she _____ to Thailand?

• moves

• moved

• has moved

• had moved

My English _____ since I moved to Australia.

• has improved

• have improved

• had improved

• had been improved

My English _____ since I moved to Australia.

• has improved

• have improved

• had improved

• had been improved

We _____ that car for ten years before it broke down.

• has used

• have used

• had used

• had been used

James _____ his homework yet.

• has finished

• has not finished

• had finished

• had not finished

I _____ to Korea before.

• have never been

• has never been

• had never been

• had not been

Helen _____ to Chiang Mai three times in the last year.

• has traveled

• have traveled

• had traveled

• had been traveled

I _____ to the store before my sister woke up.

• has already been

• have already been

• had already been

• had been being

She _____ a bear before she moved to Alaska.

• has never seen

• have never seen

• had never seen

• had never been seen