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-- I'd met her many times before yesterday. -- So A．did I B．had I C．I did D．I had
She had changed so much that I could hardly __ her. A．differ B．find out C．explain D．recognize
— Excuse me, are you waiting for the bus？ — Yes, I am. But the bus is so late. __，how can
__ more careful, his ship would not have sunk. A．If the captain were B．Had the captain been C．Should the captain be D．If the captain would have been
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