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--- Is Mr. Smith in the office?
--- Yes，_____ he is in charge of the office，he must be there.
A. however B. since C. whether D. for
查看习题详情和答案>>
--- Is Mr. Smith in the office?
--- Yes，_____ he is in charge of the office，he must be there.
A. however B. since C. whether D. for
查看习题详情和答案>>--- Is Mr. Smith in the office?
--- Yes，_____ he is in charge of the office，he must be there.
A. however B. since C. whether D. for
查看习题详情和答案>> --- Is Mr. Smith in the office?
--- Yes，________ he is in charge of the office，he must be there.
A. since B. however C. whether D. for
--- Is Mr. Smith in the office?
--- Yes，_____ he is in charge of the office，he must be there.
| A．however | B．since | C．whether | D．for |