I want to buy a pair of new trousers to ___ my sweater.
More and more high-rise buildings have been built in big cities __________ space.
I don’t think the experiment is _________ failure. At least we have gained _________experience for future success.
Don’t _____me. What I really mean is that he is smart and can deal with each situation well.
There was a _______look on his face when he met with the______problem.
You’d better go there by train. The train ticket is _______the airplane ticket.