If more people give up driving cars,the air will get much in a few years.( )
clean
cleaner
the cleaner
the cleanest
While Linda was still sleeping,her mother _______ breakfast in the kitchen.( )
was making
is making
has made
Bill went to watch the boat races.________ fantastic the dragon boat teams were!( )
What
How
What a
Guizhou is ______ Huanguoshu Waterfall and Moutai in the world.( )
famous for
popular with
regarded as
As we all know,the telephone ________ by Alexander Graham Bell in 1876.( )
invented
is invented
was invented
Jimmy wants to _______ his trip because he is too busy with his studies.( )
put off
wait for
prepare for