问题

What’s DIY exactly, Suzy —It_______ “do-it-yourself”, you do something yourself instead of ________ someone to do it.

A:six billion ,five hundred million, four hundred and thirty-one thousand, seven hundred and twenty –nine.
B:six thousand and five hundred million, four hundred and thirty-one thousand, seven hundred and twenty –nine.
C:six billion ,five hundred million, four thousand, three hundred and seventeen hundred and twenty –nine.
D:six thousand and five hundred billion four hundred and thirty-one thousand, seven hundred and twenty –nine.;
正确答案是: