___________ your car unlocked outside means___________ trouble.

Once harm ______ to the environment, it takes years to have the system recovered

What do you think of the TV show Readers hosted by Dong Qing— Wonderful! I think it is ______ a meaningful TV show that ______ many people like watching it.

Could you lend me your MP5___is broken.— Sure, here you are.

15．– How cold it is! I wonder how grass survive under such heavy snow． –Don’t worry．There is a lot of air in loose snow which _______．