I’ m sorry, I mistook you ___ your sister ___ mistake.

—I heard that your daughter had been admitted by a famous university.—But they charge so high tuition.I can’t _________such a large sum.

Speaking of Tom, there are several things that are not easy to ____ ,say, his dishonesty.

The more one is ______the English-speaking environment, the better he or she will learn the language.

They raised a lot of money and ________ a school for the children in the mountain area.