单项选择题
I thought that this would be a funny trick（）Jim.
A.to play on B.to have played C.playing on D.to being played on
单项选择题 （）,we keep records on all the experiments so that we may have enough.
单项选择题 We（）the bathroom and plan（）the bedroom this year.
单项选择题 One of the benefits of the new model is that it is easier（）than the old one.
