Tim is weak in math, so he is trying _________ up with other students now.
You never know how much difficulty we _________ such a dishonest man promise to change last time.
— _________ you _________ stay up late to finish your homework?— Of course not. I _________ go to bed early. So I should plan my time wisely.
I don’t know _________ at 2015 IAAF World Track and Field Championships Beijing(2015年北京田联世界田径锦标赛).
— Are you going anywhere?— I _________ about visiting my sister, but I have changed my mind.
Friendship is _________ wine. The longer we keep it, the tastier it will be.