西红柿曾被视为有毒之果,并被取名为"狼桃"。直到18世纪末,法国的一名画家在冒险品尝"狼桃"之后,才揭开了西红柿的食用之谜。这说明( )
—Does your father still smoke? —No, he has succeeded in_____ smoking for three years.
I think that you have made rapid _____ in math.
I find _______necessary to do everything we can ____________protect the environment.
Sam didn't go to school yesterday , did he? ____ .He was ill yesterday. A. Yes, he did B. Yes, he didn’t C. No, he didn’t
_____ important news it is to have a sports meeting next week! A. What B. What an C. How