work on the math problem是什么意思
\u9009\u62e9\uff0ccan he work [ ] the math problems? A. in B. on C. outC
work out\u7b97\u51fa\uff0c\u505a\u51fa
O(\u2229_\u2229)O~
\u6211\u4e0d\u80fd\u8f7b\u6613\u7684\u89e3\u51fa\u8fd9\u9053\u6570\u5b66\u9898\u76ee\u3002
解决数学题目而已. 句里没有 Hard 或difficult之类的形容词.在这个数学问题
work on the math problem
解决数学难题,
数学工作上的问题？
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