问题补充：
----Where is Mr Brown? I have some questions to ask him.
----He the office.
A. has been to
B. has been in
C. has gone to
D. has gone in
答案：
A. has been to
B. has been in
(答案→)C. has gone to
D. has gone in
解析：可联系答.案.网客服索取。
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