Don’t you realize the _________ these chemicals are doing to our environment?
shelter
track
damage
outline
This is the only thing _________ I can do now．
what
which
that
all
In hot countries, it’s possible to sleep _________ in summer．
in outdoors
at outdoors
outdoor
outdoors
Would you please _________ the paper for me and see if there are any obvious mistakes．
look around
look into
look up
look through
The plan was in _________ just because people were unwilling to cooperate．
pieces
danger
trouble
ruins
We all have a part to _________ in the fight against crime．
play
take
playing
taking
Rather than _________ on a crowded bus, he always prefers _________ a bike．
ride, ride
ride ,riding
ride ,to ride
to ride, riding
You can never know _________ when she received our nice birthday presents．
how Mary was excited
how excited Mary was
how excited was Mary
Mary was how excited
Anything that _________ Yao Ming interests me all the time．
concerns
matters
concerning
mattering
The party was successful ,but we thought _________ a pity not to have invited you．
its
this
it