— Seems you are quite familiar with Russia.

       — That is because I _________ the country in 1999.

       A. have visited       B. was visiting              C. had visited        D. visited

— Seems you are quite familiar with Russia.

         — That is because I _________ the country in 1999.

         A. have visited B. was visiting          C. had visited           D. visited

—Seems you are quite familiar with Russia.

—That is because I _________ the country in 1999.

—Seems you are quite familiar with Russia.

—That is because I _________ the country in 1999.

1. A.
   have visited
2. B.
   was visiting
3. C.
   had visited
4. D.
   visited

—Seems you are quite familiar with Russia.
—That is because I _________ the country in 1999.