A.that
B. who
C. when
D. where
第2题
A."book" $ "This is a book"
B.AT("book","This is a book")
C."this" $ "This is a book"
D.AT("this","This is a book")
第4题
A.whose book it is
B.whose book is it
C.whose book it was
D.whose book was it
第5题
A.a book review
B.the preface of a book
C.the postscript of a book
D.the concluding part of a book
第6题
A.a book review
B.the preface of a book
C.the post script. of a book
D.the conc4uding part of a book
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