“Practice makes perfect” was an old saying.It tells us that it 1.
does not any matter if we are slow at doing something.As 2.
long as we keep on trying and practice,well do a good job 3.
in the end.The saying is especial useful in English study. 4.
Since a student is poor at speaking,he should grasp every 5.
chance to open mouth and speak English.His oral English 6.
may be excellent one day due to his hard works.Not only is 7.
the saying useful in English study,it is also helpful in our 8.
daily life.To an extent,it is no short cut in doing everything 9.
since key to success lies in “Practice makes perfect”. 10. 1.was→is
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(答案→)1.was→is
解析：
1.was→is 时态错误。此段属议论文,此处应用一般现在时态。
2.去掉any matter在这里是动词。It doesnt matter没关系。
3.practice→practising/practicing 根据一致性原则可知and后面应用动名词。
4.especial→especially 副词修饰形容词。
5.Since→If if表示假设 “假如一个学生说得不好……”
6.open后面加his。
7.works→work work的意思是“工作”,为不可数名词。
8.正确。
9.it→there 固定结构。There is no...in doing sth.
10.since和key之间加the 名词前面加定冠词表特指。