The People’s Republic of China was ______ on October1st,1949.
#44514
A
find
B
found
C
founded
D
founding
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The old should _____ well.
#44832
A
be take care of
B
look after
C
be looked after
D
be taking car of
 Personal computers ______ in 1976. It has changed the whole world.
#44711
A
have invented
B
were invented
C
is invented
D
invented
A lot of trees ______ on the hill yesterday.
#44945
A
are planted
B
will be planted
C
have been planted
D
were planted
The Trojan War ______ by Helen and her beauty.
#44539
A
causes
B
is caused
C
caused
D
was caused