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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The light bulb ______ by Edison in the middle of the 1780s.
#44649
A
is invented
B
was invented
C
invented
D
invent
The elderly should _________ politely. Also, they must ___________ well.
#44822
A
speak, take care of
B
be spoken, be taken care
C
be spoken to, be looked after
D
be spoken to, be taken care of
While he the bus, he a book.
#44868
A
was waiting for, read
B
waited for, was reading
C
was waiting for, was reading
D
waited for, read