—May I go and play with Dick this afternoon,Mum?—No,you can’t go out________your work is being done.
196. ______ other good students, the teacher thinks, Alice is _____ student.
197. When I got off the crowded bus, I found my pocket ______ and the disk in it with the important document _______.
198. Nobody but doctors or nurses and those _____ by Dr Hu _____ to enter the patient’s room.
199. _________ in a heavy traffic jam in a taxi while you are hurrying to the airport is quite an unpleasant experience.
200. With some books he needed ______, he went into the book store quickly.