In many American universities,the total work for a degree ________ thirtysix courses,each ________ for one semester(学期).
She is a nurse,___ a doctor as well.
.I would be very glad to help, ___ I’m going away on business.
38.The task is hard, ___, the workers managed to finish it in time.
39.When you read the book, you’d better made a mark ____ you have any questions.
___ she will join us in the game is not decided yet.