21. Peter: I’ll look at your laptop for you, but I can’t promise to fix it. I’m not an expert.
Cindy: Will you charge me for it?
Peter: Don’t be silly. _______________ I’ll do it for nothing.
(A) It’s costly.
(B) Of course not.
(C) It’s only NT$300.
(D) You can sell it.
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統計: A(46), B(223), C(34), D(18), E(0) #587209
統計: A(46), B(223), C(34), D(18), E(0) #587209