The light bulb ______ by Edison in the middle of the 1780s.
#44649
A
is invented
B
was invented
C
invented
D
invent
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More and more people have realized that we won’t have cleaner water to drink unless something _______soon.
#44577
A
is done
B
was done
C
will be done
D
to be done
The park _________by the cleaners every two days.
#44827
A
is swept
B
was swept
C
has swept
D
will sweep
I was told that a film directed by Feng Xiaogang this coming Sunday．
#45046
A
is showed
B
will be showing
C
will show
D
would be shown
—Smoking _________in the cinema. Please stop _________. —Sorry, I won’t.
#44571
A
is allowed; smoking
B
allows; to smoke
C
isn’t allowed; smoking
D
isn’t allowed; to smoke