改写句子。 1.Mary can make some strawberry cakes.(否定句) Mary ______ make ________ strawberry cakes. 2.Has her deskmate got a blue skateboard? (肯定句) Her ____________ got a blue skateboard. 3.Grandma is fine. (划线提问) _______________ grandma? 4.Sam is on the sofa. (划线提问) _______________ Sam? 5.I’m sad. (划线提问) How ______ you _______? 6.I have got a new colour ball. (一般疑问句) _______ you _______ a new colour ball?