问题
选择题
If I _______ what the teacher says, I'll go and ask him for help. [ ]
A. won't understand
B. am not understand
C. doesn't understand
D. don't understand
答案
答案：D
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If I _______ what the teacher says, I'll go and ask him for help. [ ]
A. won't understand
B. am not understand
C. doesn't understand
D. don't understand
答案：D