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21. --- Have you seen ________ pen? I left it here this morning.
---- Is it ____________ black one? I think I saw it somewhere.
A. a; the B. the; the C. the; a D. a; a
22. There are a lot of new buildings on ______ side of the street.
A. either B. every C. both D. all
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21. --- Have you seen ________ pen? I left it here this morning.
---- Is it ____________ black one? I think I saw it somewhere.
A. a; the B. the; the C. the; a D. a; a
22. There are a lot of new buildings on ______ side of the street.
A. either B. every C. both D. all