问题
选择题
Don't worry too much about ________ mistakes. They are ________ natural part of learning.[ ]
A. the, a
B. 不填, a
C. the, 不填
D. the, the
答案
答案：B
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Don't worry too much about ________ mistakes. They are ________ natural part of learning.[ ]
A. the, a
B. 不填, a
C. the, 不填
D. the, the
答案：B