某些干部在公开场合高喊“全心全意为人民服务”,提起腐败行为深恶痛绝,一脸严肃。而实际上却是另一副面孔。他们不但没有做到为人民服务,有些甚至做出侵害人民利益的事情。这些“两面干部”的行为主要违背了( )
Pat decided to ______ eating fast food to lose some weight and keep fit.
Sorry, we don’t allow ______ in the lecture room.
—Would you prefer to attend a private tutor? —I’d rather _____ for a class than _____ a tutor.
The father as well as his daughters _____ skating on the freezing river every Sunday afternoon.
Martin was_____ to win the 100-meter race, but he fell to the ground and missed the chance.