Bikes ______ in the 1880s and they ______ traveling around.
#45063
A
were invented; were used as
B
were invented; are used for
C
was invented; was used for
D
invented; are used to
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—Hey, Jack. Waste paper ________ here.—Sorry, I won’t do that again.    
#44557
A
cannot throw
B
cannot be thrown
C
will not throw
D
will not be thrown
Computers ________widely in our daily life.
#44976
A
use
B
used
C
were used
D
are used
Bamboo can ___________ paper.
#44992
A
used to make
B
be used make
C
be used to make
D
be used to making