A. after B. unless C. until D. when
单项选择题You'd better （）loudly when they are sleeping.
A. speak B. to speak C. not to speak D. not speak
单项选择题—Why was the price of bread so high that year —（） the war broke out.
A. As B. Since C. For D. Because
单项选择题Energy is （）makes one work.
A. what B. something C. anything D. that
单项选择题（）time went on, the truth has come to light.
A. When B. With C. By D. As
单项选择题—Could you tell Lucy about the news when you see her —Sure, I will （）I see her.
A. certainly B. fortunately C. probably D. immediately
