根据所给的提示,完成句子。每空一词,含缩略词。 小题1:Hua Yu received an e-mail last Wednesday. (改为否定句) Hua Yu an e-mail last Wednesday. 小题2:There are some students in their class. (对划线部分提问) students are there in their class? 小题3:Maria often lends his dictionary to me. (改为同义句) I often ______a dictionary ______ Maria. 小题4:我们中国人认为钓鱼岛属于中国。 We Chinese think that the Diaoyu Island ________ _______ China.