2013年10月1日起,我国洗衣机等五大类家电产品将启用新能效标准。但也有人预测新上市的高能效家电会因其高价格遭遇“叫好不叫座”的尴尬局面。导致高能效家电价格高的根本原因是
Yesterday he ____ kites with his classmates in the field.
I don’t have _____ money to buy a present for my mother.
The mother often makes the boy ____ his homework before supper.
What did you decide ____ after you had lunch?
Did you have great fun _____ English from Mr.Green?