A good deal of money has been spent on books.为什么这里是has been,而不用has?

A good deal of money has been spent on books. a good deal of money算单数还是复数? a good deal of 和a good deal的差别 a good deal和a good deal of的区别 a good deal of等于a great deal A good deal of money has been spent on books.为什么这里是has been,而不用has? 翻译：It cost me a great deal of money. His "Selected Poems"_____first published in 1965.A.was B.has been2.A good deal of money ___spent on books.A.has B.has been what a good deal . a plenty of ,a great deal of ,a good many of,a number of 的区别, 请好心人帮忙做一下英语试题,谢谢!第16题 Since a great deal of money is needed to operate a business, _______ people are needed to A、many a B、a good many C、a good deal of D、a large amount of第17题 Not surprisingly, his strang a great many与a great deal与a good deal of和a lot of的区别 a good many ,a lot of,a great deal of,a great many of 的区别 a good many, a good many of, a great deal oa good many, a good many of, a great deal of, a great deal 四个短语的意思,用法和区别 a good deal和a good many of有什么区别? That's a good deal. a good many,a plenty of,a varienty of,a great deal之间有什么区别? 词组 a good many / a good numberof / a great amount of / a great deal of 的区别、用法词组：a good many a good number of a great amount of a great deal of以上四个词组的区别是什么?