30. The No. 5 subway line, ______in October, 2007, has greatly improved the traffic conditions in Beijing.
, they didn’t do well in helping each other with their study.
—How did you find your missing key?— .
You didn’t bother me. , I like your company.
The manager meant ____ the workers that being 5 minutes late meant ____ the company.
His parents died when he was five, so he was by his uncle.