I regret ___ harder in the past two years.
.Mary felt ______from the outside world, since she lacked an Internet connection and couldn’t receive any e-mail.
I have been looking for Michael for a whole day. Where ______ he have gone?
.—You couldn’t have bought me any present better. —_______.
So suddenly _____ that I hadn’t prepared for it. What a pity I had let it go!
Our new school was built in a beautiful place, around _____ high mountains.