题目内容
He has been very ________ in the work. We can't finish doing it without him. (help)
–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
—How many times _____ he _____ NanChong? —Twice. A. has, gone to B. has, bee to C. has ,been in
