I can hardly imagine Peter across the Atlantic Ocean in five days.A. sailB. to sailC. sai

问题补充：

I can hardly imagine Peter across the Atlantic Ocean in five days.

A. sail

B. to sail

C. sailing

D. to have sailed

答案：

A. sail

B. to sail

(答案→)C. sailing

D. to have sailed

解析：考查imagine的用法，imagine sb doing sth意思“想象某人正在做某事”，句子意思“我很难想象皮特在五天内横渡大西洋”