--- A:Could we make a tentative appointment for say this Saturday?---B:A Yes you can

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--- A:Could we make a tentative appointment for, say, this Saturday?

---B:

A、Yes, you can.

B、That’s fine for me.

C、Sorry, I don’t know. I am new here.

热搜:a是b的充分条件,b是a的必要条件吗