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( ) We must ______ and wait at a red light. A. stopping B. stops C. stop
( )The bus is _________ . A. coming B. come C. comes
( )You must look right_________ you cross the road. A. before B. at C. on
( )We must pay attention _______the traffic lights. A. at B. to C. in
( )We must ______ and wait at a red light. A. stopping B. stops C. stop