It is _______ that he has been addicted to the drugs and has difficulty quitting it.
I don’t think that your lecture ______ the audience, for they appeared quite puzzled.
The engine of the car went out of order and the bad weather _____ the helpless of the driver.
With a large amount of work ______, the chief manager couldn’t spare time for a holiday.
How much more expensive do you think a flat in a downtown area is than ______ in a suburban area?
is widely acknowledged thatthere is life, there is hope.