How cold it is! We’ve never had ______ this winter.
| A．the colder day | B．a cold day | C．the coldest day | D．a colder day |
In order to reduce the increasing prices of vegetables, the toll____ if a truck carrying them passes through a toll station．
| A．has cancelled | B．is cancelled |
| C．was cancelled | D．had been cancelled |
It is known to all that every minute ____ full use of____ the lessons will benefit students a great deal．
| A．which makes; studying | B．when made; to study |
| C．that made; to study | D．which is made; studying |
It really seemed ages ____ the police came on the scene and cleared away the damaged cars．
| A．before | B．after | C．when | D．as |
—I'm sorry, but there's no smoking room in this section on the train．
—Oh, I ____that, and I won't smoke again．
| A．don't know | B．won't know | C．didn't know | D．haven't known |
____ new round of competition for customers has started with discounted products in Gome and Suning, setting off____ wave of shopping rush at the end of the year．
| A．A;不填 | B．The; a | C．A; the | D．A; a |