There are over 58000 rocky objects in ______space，about 900 of which could fall down onto ______ earth.

Could you tell me_________—More than a year.

Your friend John has a lovely pet dog called” Bob”,_______

You’re not _____ to smoke here, because it’s a non-smoking area [ ]

“An awful accident ___, however, occur the other day.” The old man repeated, trembling all over.