单项选择题
A.你不必去想那些已经过去的事。真正重要的是尽量避免再去想。 B.你不必再去想那些已过去的事了。真正需要做的事是尽量避免再去想。 C.你不必再去多想那些已过去的事了。真正重要的是尽量避免再犯。 D.你不必再去思考那些没用的事了。真正需要计较的是尽量避免再去想。
A.try to please their studies B.treat their students ,as consumers C.understand their students well D.make sure their students understand
A.newspapers and magazines B.the problems and solutions C.all the areas of your study D.the suggestions of the teachers