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正确答案是：
1、 74-31=43
Seventy-four minus thirty-one is forty-three
Take thirty-one from seventy-four and the remainder is forty-three.
Thirty-one (taken) from seventy-four is forty-three．
2、88+21=109
Eighty-eight plus twenty-one is one hundred and nine.
Eighty-eight and twenty-one is equal to one hundred and nine．
Eighty-eight and twenty-one make one hundred and nine．
Eighty-eight added to twenty-one equals one hundred and nine ．
If we add eighty-eight to/and twenty-one,we get one hundred and nine．
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