单项选择题
It is not until you have lost your health（）you know its value.
A.untilB.whenC.whatD.that
单项选择题 I won't make the（）mistake next time.
单项选择题 ----The baby is hungry. ----But there's（）milk in the bottle.
单项选择题 ---（）is your girl friend like? ----She is very kind and good-looking
