Mrs.Smith finds it hard to clear up the mess, as her children are always ________ whenever she tries to.
Steve Jobs, the former CEO of Apple Computer, passed awayOctober,2011.
Happy times usually pass quickly without.
---, but are you forgetting something? --- Oh, my God. We haven’t fix our next meeting yet.
food is hard to find, few birds remain throughout the year.
The boss________company I worked in two years ago has________in solving such kind of problem.