― Let me help you carry the box.― No thanks. It’s big there is nothing in it.A. andB. s

问题补充：

― Let me help you carry the box.

― No, thanks. It’s big, there is nothing in it.

A. and

B. so

C. but

D. because

答案：

A. and

B. so

(答案→)C. but

D. because

解析：A. and并且 B. so所以 C. but但是 D. because因为；句意：让我帮你搬这个盒子吧。不用，谢谢。它虽然大，但是里面什么都没有。故选C