I try to understand __________ that prevents so many Chinese from being as happy as one might expect.
I don’t really work here; I ___ until the new secretary arrives.
Tom sat under a tree and seeing his friend, ___ up in no time.
Being lazy ___ Peter his job.
In order not to be disturbed, I spent three days ___ up in my study.
We are only___ glad to do anything we can ___ her.