问题描述:
15.We always keep ________ spare paper,in case we ran out.
A.too much\x05B.a number of\x05C.plenty of\x05D.a good many
以及这四个选项的区别,
A.too much\x05B.a number of\x05C.plenty of\x05D.a good many
以及这四个选项的区别,
问题解答:
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