问题

Where did you get this book—I picked it up from a second-hand bookshop if you______ know

A:unless
B:although
C:because
D:was living

正确答案是：

同类题型

It suddenlytome that this was something that I should never do, so I turned down her request.

Do you know our town at all? —-No, this is the first time I ____ here

possible that one day wewill disability, so we shouldn’t look down upon the disabled.

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