He said that light ____ much faster than sound.
A．traveled B．travels C．is traveling D．had traveled
–The house ____ fire and was destroyed.
--Who ____ fire to the house?
A．set; caught B．caught; set C．took; played with D．was; caught
A lot of coal miners died on the job last year, ____ the local government to shut nearly 500 small mines in Shanxi Province alone.
A．forcing B．to force C．forced D．has forced
In Scandinavian countries it is common ____ for the husband to stay at home to look after the baby.
A．use B．sense C．practice D．idea
He has ____ letters to deal with. He has to work from morning to night.
A．many of B．a great deal of C．masses of D．the number of
Social attention should be paid ____ our earth from ____.
A．to preventing; being polluted B．to prevent; polluting
C．to prevent; being polluted D．to preventing; polluted
