One ____ of the book is missing, so I can’t learn the whole story.
A. copy B. page C. writer D. reader
because, late, rained, he, it, was, heavily
________________________________________________________________________.
when, do, your, be careful, homework, you
________________________________________________________________________.
Lucy, sister's, is, the, your, friend, of
________________________________________________________________________?
reached, finally, the top of, they, mountain, the
________________________________________________________________________.
these, Tom's, pens, are
________________________________________________________________________.