there ___[be] two pairs of ___[glass] on the desk ten minute
there ___[be] two pairs of ___[glass] on the desk ten minutes ago.
the boy can ___[fly] the kite.
mrs black ___[go] to work by bike every day,but mr black ____[do not].
the boy can ___[fly] the kite.
mrs black ___[go] to work by bike every day,but mr black ____[do not].
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