It ________ Yang Liwei about 21 hours ________ the earth 14
It ________ Yang Liwei about 21 hours ________ the earth 14 times in his spaceship. A.spent; circling B.took; travelling C.spent; to travel D.took; to circle
答案D 此题题眼为It,在此处做形式主语,真正的主语是后面的动词不定式,即It take sb.some time to do sth.,与sb.spent some time (in) doing sth.同义,类似的用法还有It is+adj.+to do sth.,如:It's necessary for us to learn.查看原帖