On top of the mountain ______, which was built 2,000 years ago.

—Mum，I am afraid I won’t do well in the coming test.—Honey，________more careful，________you will make it.

Little ______  that we were watching his every move，so he seemed to be going his own way      in this business.

The door opened and in _____.

—Did you see who the driver was?  —No, so quickly_________ that I couldn’t get a good look at his face.