---Polly：Would you like to e over for lunch this Saturday?---Molly：Oh, ______, but I have an appointment with the doctor. Thank you for inviting me.---Polly：That's, OK. ______.A.I'd really love to; I have a meetingB.it's very friendly of you; I'm very busyC.that sounds good; Perhaps some other dayD.I'd really love to; Maybe some other time
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D解析思路分析：本题是关于邀请和应答的交际用语．对邀请不能接受，最好回答“I'd love to, but…”．在but后说明你不能接受邀请的原因；第二空应填和商定e over for lunch时间相关的词语．