–Hi, Danny! I can’t find my dictionary. Have you seen it __________? –Sorry, I haven’t. Why not ask Kitty? Perhaps she’s seen it.

I hate ____ when people talk with their mouths full. 

We asked John and Jerry, but ____ of them could offer a satisfactory explanation.

I was told that the water of the Ganjiang River is much cleaner than ____ of the Xiangjiang River.

 — It is a pity that we have nothing to refer to when we come across new words.— I quite agree with you. There isn't any dictionary around when we need ______.