Dear students，

　　The Students' Union was going to hold an English Speech       1. _______

　　contest in the evening of December 30. The purpose            2. _______

　　is increase the students' interest in learning English and    3. _______

　　improve their spoken English. Which is going to be held in    4. _______

　　the school main hall and will begins at 7：30. And the        5. _______

　　best five students of this English contest will be given      6. _______

　　prizes. Someone in Grade Three will be                        7. _______

　　welcome to take part in it. Those would like to take part     8. _______

　　in this contest should go to the office of the Students'      9. _______

　　Union and sign it up your names and the topics of your        10._______

　　English Speech. Welcome to this great fun！

　　答案及解析

　　1. was改為is.

　　2. in改為on.指具體某一天的晚上， 要用介詞on.

　　3. is后加to.此處為不定式作表語。

　　4. Which改為It.此處應用it指代前文的an English Speech contest， 如用which指代則無主句。

　　5. begins改為begin.will后需用動詞原形與will共同構成謂語部分。

　　6. 此行無錯。

　　7. Someone改為Everyone.everyone側重整體,指"每個人"； someone側重個體， 意為"某個人".

　　8. Those后加who.此處用who引導定語從句。

　　9. go改為come.根據文章第一句話可知， 此通知發出者是the Students' Union.所以要用come而不用go.

　　10. 刪去it.此句中已有賓語your names， 不需用it.