Drive slowly, Mary. ______ is something ahead on the road.
33.I don't think_____________difficult for a Chinese student to master a foreign language within five years34.
35..It's the second time you_________late this week.36.
37.It will not be__________we meet again.38.
39.It's demanded that we____________there on foot.40.
41.“It” is often used to________a baby.42.