It has always been the _____ of our firm to encourage workers to take part in social activities.
| A．plan | B．campaign | C．procedure | D．policy |
Exciting as its special effects are ______, there is too much violence in the film.
| A．to watch | B．to be watched | C．watching | D．being watched |
Young people who have got jobs may realize university lessons can’t be the only preparation for all the situations _______ appear in the working world.
| A．where | B．when | C．that | D．what |
-----Who has made a mess in my room?
-----Who else it but your naughty son?
| A．could do | B．could have done | C．did | D．had done |
----- What is the price of petrol these days？
-----Oh, it ______ sharply since last month.
| A．is raised | B．has risen | C．has arisen | D．is increased |
As is recorded in history, silkworms (蚕) were first raised by a woman in _____ is today Hebei Province.
| A．where | B．the place | C．which | D．what |