“Isn’t it time you ________ down to_______something useful” said his mother.

I prefer to buy a new TV rather than ________ it

In his spare time, he often listens to music or watches TV to himself.

None of us knew what had happened __________ they told us about it.

Liu Xiang achieved his __________ to becomethe first man to cover the 110-meter hurdles in less than 12.91 seconds.