线呢?
when is your birthday?1.thereare some trees in the plarground.(改为否定句)4.there is only one computer in my class.(对划线部分提问）划线部分是only onethere are not any trees in the playground.how many computers in your class?略久没碰英语，将就吧还有一题你没回答，回答了，我才能选为满意答案don't look at the blackboard