Xiamen Xiang'an Tunnel, _____ is the first undersea tunnel built in mainland China, opened to traffic on April 26th.
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.