Keep your minds ________ to different ideas, or you will not be successful.

--- I was walking along the street and all of a sudden, a car cut in and knocked me down．--- You can never be ______ in the street．

 Their sudden attack made us more ________ of the danger around us.

 As the party was very informal, Jack stood there looking stiff and     in his formal dress. 

There were no tickets _________ for Friday’s performance so we went to the cinema instead.