At the foot of the hill you could hear nothing but the ______ of the running water.

__________ mother is a middle school teacher．

—Where is Liu Xiang from? --He is from         .

 ―Congratulations, Jane, you have won the first prize in the physics competition.―Thank you, Mr Green. I can’t make such great __________ without your help.

The _____ now is that we have many _____ to ask.