31. The coffee is too bitter(苦的). I want to add a ______ ofsugar.(A) piece (B) bags (C) spoon (D) po

問題詳情

31. The coffee is too bitter(苦的). I want to add a ______ ofsugar.
(A) piece
(B) bags
(C) spoon
(D) pounds

參考答案

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