The guide walked so fast that most of the tourists could not _____ him.
A. go in for
B. keep up with
C. follow up
D. pass on
A. go in for
B. keep up with
C. follow up
D. pass on
【答案】
A. go in for
B. keep up with
C. follow up
D. pass on
A. go in for
B. keep up with
C. follow up
D. pass on
【答案】
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