Jack almost fell off the clift, but he managed to ______ until help came.

Jack almost fell off the clift, but he managed to ______ until help came.

A.go on

B.come on

C.hang on

D.put on

答案及解析： C

解析：

四个含on的词组中，唯有hang on（紧紧抓住不放）符合语境。