题目内容
—Where is our math teacher?
—He __________ to Beijing for a meeting. He __________ there twice.
A. has gone; go B. has been; has been
C. has been; has gone D. has gone; has been
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题目内容
—Where is our math teacher?
—He __________ to Beijing for a meeting. He __________ there twice.
A. has gone; go B. has been; has been
C. has been; has gone D. has gone; has been