Don’t play tricks ______ that little child, he is crying.
The mobile phone has changed people’s life a lot ________ it was invented.
The girl is so excellent that you ________ praise her too much.
Yaxi, a quiet village in Gaochun, _________ China’s first “Slow City” in November 2010.
— What do you think of the book?— Oh, excellent. It is worth ________ a second time.
He has given me ________ help, so I can make such great progress in Physics.