问题描述：
1.He joined the English club____.
A.to improve his speaking Englsih. B.practicing speaking Englsih
C.to practice spoken English. D. improve his spoken English.
2.I will come__ I don't change my mind
A if B if not C unless D until
为什么?
A.to improve his speaking Englsih. B.practicing speaking Englsih
C.to practice spoken English. D. improve his spoken English.
2.I will come__ I don't change my mind
A if B if not C unless D until
为什么?
问题解答：
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