We are going to organize a talent show to ________ some extra money for charity.
Is Mary in the classroom? — No. She______ to the library.
Good paper is usedletters, magazines and books. [ ]
I don’t think there will be many students left in the class,_______,because the conditions are not fit for studying.
第一部分:单项选择—Make sure you have turned off the air conditioners before going out.—_______________.