【题目】Can you imagine the Great Wall in such a short time?
A. to climb B. climb C. climbed D. climbing
【答案】D
【解析】句意:你能想象在这么短的时间里爬长城吗?to climb动词不定式,爬;climb是动词原形;climbed是过去式;climbing是动名词形式。句中的谓语动词imagine意思是想象,后面跟动名词做宾语,意思是想象做某事,故应选D。