Do you konw ____?He ____at the libary.I saw him there just now.A.where tom has gone :can be

题目

Do you konw ____?He ____at the libary.I saw him there just now.A.where tom has gone :can be
B where tom has been:can be

答案

A
have been to somewhere曾经去过某地,已经回来了.
have gone to somewhere去了某地,还没回来．