单项选择题
In general , the amount that a student spends for housing should be held to one-fifth the total()for living expenses.
A.acceptable B.available C.advisable D.applicable
单项选择题 When you go to the doctor he asks you to describe your()so that he can make a diagnosis (诊断).
单项选择题 He ran so fast that he was out of()
单项选择题 Be careful with those fireworks; they are()to go off unexpectedly.