单项选择题
One of the requirements for a fire is that the material （） to its burning temperature.
A．is heated B．will be heated C．be heated D．would be heated
单项选择题 I have to ______ my expenditure to my income.
填空题 Many foreign words and phrases have ______ the English Language. (rich)
填空题 The young industrial engineer did everything in a ______ way. (leisure)
