The bell rang and came in Mr. Brown a book in his hand. Then the class began.A. forB. wh

问题补充：

The bell rang and came in Mr. Brown, a book in his hand. Then the class began.

A. for

B. when

C. with

D. while

答案：

A. for

B. when

(答案→)C. with

D. while

解析：考查介词辨析。本题是with的复合结构，其余都不能构成复合结构。