Jack almost fell off the cliff, but managed to until help came. A. keep on B. ca
来源：网络
时间：
推荐文章
Jack almost fell off the cliff, but managed to _____ until help came.
A. keep on B. catch on C. count on D. hang on
试题答案
D
hang on牢牢抓住，抓紧不放;keep on(doing sth.)继续(做......);catch on 理解;count on 指望，依赖。本题译文：杰克差点从悬崖上掉下来，但得以抓住不放直到得救。