21st Century, ____weekly newspaper, provides us with____variety of fresh articles about campus studies and life.
| A．a, the | B．the, a | C．the, / | D．a, a |
He rushed out of the burning house with the little boy in his arms ____________ the roof fell down and the boy was saved.
| A．after | B．as | C．before | D．until |
A new supermarket ______ here. They hope to finish it next month.
| A．will build | B．is built | C．has been built | D．is being built |
--- I’ll tell Mary about her new job tomorrow.
--- What? You ______ her last week.
| A．ought to tell | B．must have told | C．might have told | D．should have told |
--- I don’t mind telling you what I know.
--- You _________ . I am not asking you for it.
| A．mustn’t | B．can’t | C．needn’t | D．should not |
--- George and Lucy got married last week. Did you go to their wedding?
--- No, I _______. Did they have a big wedding?
| A．was not invited | B．didn’t invite | C．hadn’t been invited | D．haven’t been invited |