Ⅵ. 完成句子。(每空l分，共8分)
根据所给提示，完成句子。每空一词，含缩略词。
69. Chen Ping received an e-mail last Friday. (改为否定句)
Chen Pingan e-mail last Friday.
70. There are fifty students in our class. (对划线部分提问)
students are there in your class?
71. I often borrow a dictionary from Bruce. (改为同义句)
Bruce oftenhis dictionaryme.
72．交卷前你应仔细检查。(完成译句)
You should check your answers carefully before youyour paper.