Suzy can get better results in geography if she her best.A. doB. doesC. will doD. is going

问题补充：

Suzy can get better results in geography if she her best.

A. do

B. does

C. will do

D. is going to do

答案：

A. do

(答案→)B. does

C. will do

D. is going to do

解析：if引导的条件状语从句要用一般现在时。