问题
_________a stone tower near the old pine tree.
A:It used to be
B:There used to be
C:There used to have
D:It is used to be
B:There used to be
C:There used to have
D:It is used to be
正确答案是：
同类题型
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_____ do you learn English? — By listening to tapes and reading aloud．
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