请从所给的十组对话中选择恰当的一组,并将其字母代号填在每小题相应情景图画下面的括号内。
—_______ did you play ? —In the school playground. A. WhereB. When C. What
—What does the sign mean? —It means “_______”! A. Do not touchB. Don’t smokeC. Danger
Did they _______ after dinner last Saturday ? A. chattedB. have a chat C. chatting
They sang some songs _______ the Art Festival _______ October last year. A. on … onB. at … inC. in … on
My mother _______ an English book now. A. readsB. readingC. is reading