问题
选择题
Some exercises appear to be ______ ones you have done, but on ______ second thoughts, you’ll find that they’re different.
A．/; the
B．the; /
C．the; a
D．/; /
答案
答案：B
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Some exercises appear to be ______ ones you have done, but on ______ second thoughts, you’ll find that they’re different.
A．/; the
B．the; /
C．the; a
D．/; /
答案：B