—Oh! I came in a hurry and forgot to bring food.

—It doesn't matter. You can have ________. [ ]

A. we

B. us

C. our

D. ours

在商业交往中，举止得体的具体要求包括（）

A.感情热烈

B.表情从容

C.行为适度

D.表情肃穆