In order to continue to learn by ourselves when we have left school, we must ________ learn how to study in the school now.
You can’t imagine what difficulty I took _____ your home.
.Every time I express an opinion, he always argues ____ me ____ it.
I won’t give you any help ___ you tell me the truth. It’s none of my business.
-- _____? --- He is kind but sometimes a little silly.
Generally speaking, it is about ____ on the mountain than in the valley.