6. I'm afraid we don't have that book in stock, ________ we can order it for you.A)as B) but C) sinceD) for A: as B: but C: since D: for
6. I'm afraid we don't have that book in stock, ________ we can order it for you.A)as B) but C) sinceD) for A: as B: but C: since D: for
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