l don't have my science book.这句话那里有错?

l don't have my science book.这句话那里有错? don't you have something anymore这句话语法有错吗? Don't worry my health.I can look after myself well. 这句话有错吗? I don’t have my own book 改为同义句 book have i Chinese don't my连词成句 这句话有错吗?有错请帮忙改正并译成汉语.Don't give yourself airs. as the developments of modern science这句话有错吗 I don't have room for another book in my bag i have lift my english book on the playground ----don't worr I have not received my pay yet.这句话为什么要用have,为什么不用don't? sam ()a science book.(have) Let's carry the desk,don't we?这句话哪里有错?