单项选择题I was （）and all of my equipment （）working well.
A. in good healthy; was B. in a good health; were C. in good health; was D. in good healthy; were
单项选择题—Was his father very strict with him when he was at school —Yes. He had never praised him （）he became one of the top students in his grade.
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
