tigers, although they have beentamed, can _____ attack their trainer

Look at that red car! I think it’sinthe world.

Somuch of interest ______that most visitors simply run out of time before seeingit all.

now it is difficult __________ himto talk like the lecturer, but I think he should grasp every chance

Walmart，which is one of the largest American supermarket chains，________ some of its stores open 24 hours on Mondays through Saturdays.(2012·安徽)