单项选择题
These fuels（）heat when they burn.
A.give up B.give off C.give away D.give in
单项选择题 In most countries, the crime of murder carries harsh penalties.（）
单项选择题 I tell my mother about my trials at work and brag about the kids.（）
单项选择题 The employee had to break off the conversation in order to wait on his manger.（）
