Hundreds of jobs ________ if the factory closes．
lose
will be lost
are lost
will lose
I allow my children spend as much time watching cartoon as they ________ studying．
does
do
are
is
The new model costs twice ________ last year’s．
more than
as much as
as many as
than
What is new, however, is the scientific attempt ________ whether other planets beyond our own have given birth to advanced civilizations．
discover
discovers
discovering
to discover
Astronauts can be affected by loneliness for they have to sit in the spacecraft for weeks with very little ________ and no one ________．
to do; to talk
doing; to talk to
to do; to talk to
doing; to talk
There are so many reference books for matriculation of postgraduate and I haven’t decided which book ________．
to buy
buy
to be buying
buying
He attended an evening class ________．
each other day
every other days
each other days
every other day
We have physics on Tuesday, Thursday and Saturday; that is, we have it ________．
every three days
each two days
Every possible means ________ to prevent the air pollution, but the sky is still not clear．
has to use
are used
has been used
have used
Has the boy who was made use of ________ realized his mistake?
stealing
stolen
to steal
for stealing