---- Water can dissolve almost anything and give nutrients to creatures. ---- Yes, and that’s one of its __________.

Usually a child’s behavior is a(n) ________ of his family environment.

 Nowadays, there is a ____ that receiving education is a waste of time. 

Bear in _____ that tomorrow is our dear mother’s birthday．

I can remember very few ____ when he had to cancel his plans because of poor health．