问题
选择题
Mr. black isn't here. He _______ to the library. [ ]
A. has been to
B. has gone to
C. went to
D. goes to
答案
答案：B
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Mr. black isn't here. He _______ to the library. [ ]
A. has been to
B. has gone to
C. went to
D. goes to
答案：B