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--Hurry up! The bus is coming．

--Wait a minute．Don't cross the street ________ the traffic lights are green．

A．until               B．a(chǎn)fter              C．while              D．since

--Hurry up．The bus is coming．

--Wait a minute．Don't cross the street          the traffic lights are green．

A．a(chǎn)fter                     B．until                     C．while                     D．since

--Hurry up! The bus is coming.
--Wait a minute. Don’t cross the street       the traffic lights are green.

--Hurry up! The bus is coming.

--Wait a minute. Don’t cross the street       the traffic lights are green.

A．until             B．a(chǎn)fter             C．while             D．since

—Hurry up! The bus is coming.

        —Wait a minute. Don’t cross the street        the traffic lights are green.

        A．until          B．a(chǎn)fter          C．while         D．since

-Hurry up! The bus is coming.

-Wait a minute. Don’t cross the street       the traffic lights are green.

---- Hurry up ! The bus is coming .
----- Wait a minute. Don’t cross the street_________ the traffic lights are green.