I’ll do it better if my mother me to try one more time.A. allowB. will allowC. allowsD. a

问题补充：

I’ll do it better if my mother me to try one more time.

A. allow

B. will allow

C. allows

D. allowing

答案：

A. allow

B. will allow

(答案→)C. allows

D. allowing

解析：if条件句，遇到将来时不用将来，通常用一般现在时代替，本题条件句的主语是单数第三人称，故用allows，故本题选C。