Why don’t you bring____to his attention that you’re too ill to work on?[ ]

____________we swim in that river —No, you _______. It’sdangerous to swim there.

______ makes mistakes must correct them.

There are many new central leaders in China now, ________ many once worked in the western provinces.

I have a nice ruler.___ ruler is black. It′s very expensuve(昂贵)