—Why do you suggest we buy a new machine?—Because the old one has been damaged ______.
I think the doctor is able to care of _____ is the matter with your son .
_____ in thought , he almost ran into the car in front of him .
Do you consider it any good _____ the truck again ?
The bad weather meant ______ the rocket launch (发射) for 48 hours .
She was afraid _____ the dog in case it became dangerous .