20. –________.( )– Why not stay for another cup of tea?(本题4.0分) A、 I’m pleased to meet you. B、 See you some time later. C、 I’d better leave now. D、 I’m sorry I’m not free now.
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23. After several days of heavy rain the roof ____
23. After several days of heavy rain the roof __________ with a loud noise, cras