Because of the bad weather, the sports meet had to be ________.
D
A关闭,停业B废除,终止(与with连用)C离开,起飞D取消
We_____knowledgefromourfamilies,schools,jobs,andthemassmedia.
Thenewdiscovery_______beofgreatservicetomankind.
Decisiononwhetherthemessageisrightorwrongshouldatleastcomeafter_____whatthemessageis.
Theprofessoraskedaquestion,andDavid________agoodanswer.