(2017·北京卷·单项填空）The little problems ________ we meet in our daily lives may be inspirations for great inventions.

He’s never stolen anything before，______ he—______ ．It’s his third time to be taken to the policestation．

d women should be treatedequally according to the law, but _____ there is great room for improvement

Shall we meet on Tuesday or Wednesday –I don’t mind . _____ day is OK.

makes the book so extraordinary is the creative imagination of the writer.