The teacher entered the classroom .A. with book in handB. book in handC. with book in his

问题补充：

The teacher entered the classroom, .

A. with book in hand

B. book in hand

C. with book in his hand

D. book in his hand

答案：

A. with book in hand

(答案→)B. book in hand

C. with book in his hand

D. book in his hand

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