题目内容
We could hear the birds ________ in my hometown in the past, ________ now we can’t.
A. to sing; and B. sing; and
C. to sing; because D. sing; but
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题目内容
We could hear the birds ________ in my hometown in the past, ________ now we can’t.
A. to sing; and B. sing; and
C. to sing; because D. sing; but