We may find that learning a foreign language does not have to be________learning our mother tongue,but can in fact be twice ________.
I can't advise you what to do. You must use your own _____.
Tell your brother to come _____, because it's going to rain in a minute or two.
A successful scientist needs _____ if he wants to make hypothesis (假设) of how processes work and how events take place.
This year the farmers were just able to gather in the _____ before the fine weather came to an end.
He hated the war so much that he decided to leave the army _____.