－Iit as must of a student that he should say hello to his teachers first whenever they mee

问题补充：

－Iit as must of a student that he should say hello to his teachers first whenever they meet.

－I can’t agree more.

A. take

B. look

C. think

D. make

答案：

(答案→)A. take

B. look

C. think

D. make

解析：可联系答.案.网客服索取。