The silence of the library is sometimes broken by a sudden cough or the sound of pages .
When ______ with any difficulty, you should not give up easily.
As soon as I joined the big crowd yesterday, I got _______ from my friends.
______ life pace continues to speed up, we seem to be losing the art of enjoyment.
I can hardly imagine ______ little children can work out the problem in _____ short a time.
---Would you please help me carry the suitcase? ---____________.