I followed the man in a blue jacket thirty meters me and watched him enter the hall.A. a

问题补充：

I followed the man in a blue jacket thirty meters me and watched him enter the hall.

A. apart from

B. ahead of

C. in the front of

D. at the back of

答案：

A. apart from

B. ahead of

C. in the front of

D. at the back of

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