— Could I help you with your heavy box? You are so tired— . I can manage it.A. No.thanksB.

问题补充：

— Could I help you with your heavy box? You are so tired

— . I can manage it.

A. No.thanks

B. Yes ,please

C. all right

D. No problem

答案：

(答案→)A. No.thanks

B. Yes ,please

C. all right

D. No problem

解析：考查交际用语。A不，多谢；B好的，请；C好的；D问题。句意：—我可以帮你搬这个重的盒子吗？你很累！—不，多谢。我可以自己搞定。根据句意说明是委婉地拒绝对方。故A正确。