2. 外语
  3. I walked three kilometers yesterday and am ______ it now; my legs hurt.

I walked three kilometers yesterday and am ______ it now; my legs hurt.

admin2012-01-05  72
问题 I walked three kilometers yesterday and am ______ it now; my legs hurt.
选项 A、paying
B、paying for
C、paying back
D、paying off
答案B
解析 考查词语辨析。pay for表示“付出代价，受到惩罚”；pay表示“受到惩罚、付出代价”时，是不及物动词；pay back意为“偿还，回报”；pay off意为“偿清，向……报复”。由此可见，选项B为正确答案。
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