The trips usually start on Friday night and end on Saturday night, ____ them practical for students and workers.

As was expected, the peace talk between the two countries has________ at last and a war can’t be avoided.

– What a hard chair! –Yes, it is. But in fact, it is very comfortable to _____.

14. His careless driving _________ the traffic accident. That is, the traffic accident was ______ his careless driving.

Mary was caught in a traffic jam and by the time she arrived at the airport her father’s plane_______