John thinks it won't be long ________ he is ready for his new job．
when
after
before
since
The cost of renting a house in central Xi'an is higher than ________ in any other area of the city．
that
this
it
one
Would you mind not picking the flowers in the garden? They are ________ everyone's enjoyment．
in
at
for
to
________ at my classmates'faces, I read the same excitement in their eyes．
Looking
Look
To look
Looked
The stars are so hot that they ________ great light and heat－more than the hottest, brightest fire you can imagine．
give away
give in
give up
give out
Experts at the conference agreed that such a product with environmentally friendly technology is ________．
worth being promoted
worthy promoting
worthy of promoting
worthy of being promoted
85％of the Australian population ________ in the six major cities around the coast．
live
had lived
has lived
is living
The red building is where the workers live, and the white one is where the spare parts ________．
are produced
will produce
produced
had been produced
Some people say more but do less ________ others do the opposite．
once
while
as
The atomic clock is ________ to within 3 seconds in a century．
gradual
diverse
accurate
medium