---- How much does it _______ to fly from Beijing to Haikou one-way? ---About 1000 yuan.
–What should I do ______ healthy, doctor? --You should take more exercise.
–Have all the boys known that they ______ an English test this afternoon?--Yes. Every boy has been told about it.
He offered ______ valuable advice that ______ people disagreed.
His grandfather ______ for twelve years.
________ you've got a headache. You drank too much last night.