Helen can quickly work out many difficult problems because he has gift for Maths.
海伦能很快地解出许多难题，因为他有数学天赋。
Jack is so smart a boy that he can work out difficult maths problems quickly.
杰克很聪明，因而他能很快的解出数学难题。
Today I have to work out ten maths problems. I must write a Chinese composition and recite twenty English new words.
我今天要解决十个数学问题，我要写作文，背二十个英语单词。
Today I have to work out ten maths problems. I must write a Chinese composition and recite twenty English new words.
我今天要解决十个数学问题，我要写作文，背二十个英语单词。
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