Whilee-booksalesthisyearhavedeclined,itisstillimportan...
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问题详情:
While e-book sales this year have declined, it is still important for us to remember that the figures are still higher than ______ five years ago.
A. one B. that
C. those D. they
【回答】
C
知识点:代词
题型:选择题