I hope I will not be called on in class as I am not yet ________prepared.

 ---The light was on all night long. ---Yes. It seemed that Mike ________. He was the last one to leave the office.

 Even after I ______ to soil science, I sometimes wondered whether 1 was doing what I wanted to do.

Some fruits are so easily harvested in this area that they are never of great _____

(2013·成都第二次诊断)As the road to the airport is under reconstruction, we'd better ________ early to avoid the traffic jam.