题目内容：
—I think I am the shyest in my class. What should I do?
—Be more active in class, ________ you can improve your ability to express yourself.
A.so that
B.unless
C.or
D.although
参考答案：
答案解析：
选择题：—I think I am the shyest in my class. What should I do?—Be more active in class,
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- 题目类型：选择题
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