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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Every year lots of trees _______ to make our country more beautiful.
#45056
A
is planted
B
was planted
C
are planted
D
were planted
Fifteen-year-olds ________ to have jobs in China.
#44575
A
is not allowed
B
are allowed
C
is allowed
D
are not allowed
No children _____ to watch this kind of movie because it is too scary.
#44565
A
should allow
B
should be allowed
C
shouldn't be allowed
D
don’t allow
Personal computers ______ in 1976. It has changed the whole world.
#44711
A
have invented
B
were invented
C
is invented
D
invented
The teacher, as well as his students_______ to attend the party last week.
#44856
A
is invited
B
are invited
C
was invited
D
were invited