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
—It has been a wonderful evening．Thank you very much．
— .
A．I'm glad to hear that B．My pleasure
C．No, thanks D．Don't say so
