一WhereisMr.Black?Ihaven'tseenhimforalongtime. 一He
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问题详情：
一Where is Mr. Black? I haven't seen him for a long time.
一He _________Switzerland. He _________there for several months.
A. has gone to; has been to B. has gone to; has been
C. has been to; has been D. has been to; has gone
【回答】
B
知识点：动词时态
题型：选择题
