单项选择题

He doesn’t come today. He ______ be ill.

[A] must [B] can [C] should
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单项选择题
For so many years, the small town is still ______.
[A] nonchangeable
B. unchangeable
C. unchangble
单项选择题
[A] on B. with C. to
[A] on
B. with
C. to
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