Better not to ignore the past but learn from it instead. _____, history has a way of repeating itself.

126I feel uncomfortable each time I remember the situation _____ Mary didn’t agree with me _____ the matter

Why not find a new job?—Why should I? I _____________ as much，but I like what I’m doing

_Why is John so poor at his lessons _Henever studies ，heplays computer games all day

iversity is saving $ 300,000 per year by its energy ______ efforts.