It was not until the teacher came in ______ the students all shut up.
| A．did | B．that | C．that did | D．did that |
He was very rude to the Customs officer, _____ of course made things even worse.
| A．who | B．whom | C．what | D．which |
--- Shall we go out for a walk?
--- Sorry. This is not the right _____ to invite me. I am not in the mood to walk now.
| A．moment | B．situation | C．place | D．chance |
Please remain ______; the winner of the prize will be announced soon.
| A．seating | B．seated | C．to seat | D．to be seated |
In our school students are _______ according to how much they know and how old they are.
| A．classified | B．combined | C．listed | D．clarified |
I was_______ about it. I thought you were responsible and that’s why I scolded you. Please forgive me.
| A．curious | B．worried | C．particular | D．mistaken |