There is a wide ________of reference books to be found, so ________you look for some material needed, you can turn to me.
A.kind; the last time | B.sort; every time |
C.variety; next time | D.type; the moment |
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There is a wide ________of reference books to be found, so ________you look for some material needed, you can turn to me.
A.kind; the last time | B.sort; every time |
C.variety; next time | D.type; the moment |