Now open your books, boys and girls.是什么意思?

Now open your books, boys and girls.是什么意思? now,open up your open your books and r() Please open your books.改为否定句 open books Don't open your books .Please keep them_____(close) Don't open your books.Please keep them c______ Open your books怎样改成否定句,句意不变 Don't open your books.(改为肯定祈使句) Open your books and turn to ___(page) 21. please open your books.变否定句为什么是在open前加don't Open Your open your open your Open your open your Open your heart,open your please open your books and read lesson( ).A,fifth B,five C,the fifth