单项选择题

Anyone can borrow books from the library ______ he has a library card.

A) since
B) so long as
C) even though
D) unless
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单项选择题
I'm sorry to have spent so much money. I wish you ______ so.
A) hadn't done
B) didn't do
C) haven't done
D) won't done
单项选择题
I had to tell the truth, ______
A) didn't I
B) wouldn't I
C) hadn't I
D) shouldn't I
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