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—How many times _____ he _____ NanChong?   —Twice.     

A. has, gone to     B. has, bee to       C. has ,been in

—How many times _____ he _____ NanChong?   —Twice.     

A. has, gone to     B. has, bee to       C. has ,been in

 –Where is Tom?  --He _______ the USA. He _______ back in two months.

A. has gone to; comes                     B. has bee to; will be

C. has been to; comes                     D. has gone to; will be

—How many times _____ he _____ NanChong?  —Twice.     
A. has, gone to     B. has, bee to       C. has ,been in