根据所给提示，完成句子。每空一词，含缩略词。

1.Chen Ping received an e-mail last Friday. (改为否定句)

Chen Ping                              an e-mail last Friday.

2.There are fifty students in our class. (对划线部分提问)

                             students are there in your class?

3.I often borrow a dictionary from Bruce. (改为同义句)

Bruce often                his dictionary                me.

4.交卷前你应仔细检查。(完成译句)

You should check your answers carefully before you                           your paper.

根据所给提示，完成句子。每空一词，含缩略词。
【小题1】Chen Ping received an e-mail last Friday. (改为否定句)
Chen Ping                              an e-mail last Friday.
【小题2】There are fifty students in our class. (对划线部分提问)
                            students are there in your class?
【小题3】I often borrow a dictionary from Bruce. (改为同义句)
Bruce often                his dictionary                me.
【小题4】交卷前你应仔细检查。(完成译句)
You should check your answers carefully before you                           your paper.