—Is Jason all right? He looks so tired!—Not sure. He __________ deep into the night yesterday. He's having an exam soon.
When we are in a new place, we must __our manners and try to follow the customs of the place.
In the early morning all of us stood at the top of the mountain __ east of the city, watching _____burning sun rising.
The boy was led ___while crossing the road.
___ has taken away my notebook?
Columbus is known for the great discovery ____ a new land-America.