If someone has to an action or policy, they are responsible for it, and may be required to explain it to other people or be punished if it fails.
Mary and I see each other ________, but not as often as we used to. 21世纪教育网
It saves tome in the kitchen to have things you use a lot _______ easy reach. 21世纪教育网
------shall we have our picnic tomorrow? 21世纪教育网 -----______it doesn’t rain. 21世纪教育网
Amy joined a painting group but didn’t seem to _______, so she left. 21世纪教育网
-------He says that my new car is a ____________ of money. 21世纪教育网 -------Don’t you think those words are just sour grapes? 21世纪教育网