When you have difficulty in learning new words, you can ____the dictionary.
A person who believes that he is incapable will not make a real __________, because he feels that it would be useless.
I want to leave now; I can’t ____ nothing useful here.
The old man is badly ill and he needs ___________ to hospital at once.
If you are to treat your friends to dinner in a good restaurant at the weekend, you’d better book a table ___________.
It remains ________ whether Jim will be fit enough to play in the finals.