问题描述：
小学英语改句
we have two classes in computer science every week.改成否定句
sandy will go to australia next month 改成一般疑问句
the students are having an english lesson now对 having an english lesson划线提问
there are five hundred students in our school 对five hundred students划线提问
our school is big and clean对big and clean划线提问
we have two classes in computer science every week.改成否定句
sandy will go to australia next month 改成一般疑问句
the students are having an english lesson now对 having an english lesson划线提问
there are five hundred students in our school 对five hundred students划线提问
our school is big and clean对big and clean划线提问
问题解答：
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