It was not until the beginning of the twentieth century________to explore space.
#93086
A
did man begin
B
when man began
C
that man began
D
then man began
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32. Hardly ______ when the bus suddenly pulled away.
#94574
A
they had got to the bus stop
B
they got to the bus stop
C
did they get to the bus stop
D
had they got to the bus stop
Just after putting away the dishes, _______.
#93684
A
the doorbell was rung
B
mother heard the doorbell ring
C
someone knocked at the door
D
the doorbell rang loud
--- What do you think of the movie Avatar？--- Interesting. It is _______ again.
#93487
A
worth watching
B
worth to watch
C
worthy watching
D
worthy to watch
____was a time ____women had no right to vote .
#93784
A
There ,when
B
There , that
C
It , when
D
It , that