By the time I saw the angry expression on his face, I ______ exactly what I was having to face. But not for a moment ______ I should quit.
David said that it was because of his strong interest in literature ___ he chose the course.
Just in front of our house ___ with a history of 1,000 years.
___ most of the earth’s surface is covered by water, fresh water is very rare and precious.
Some experts think that language learning is much ___ for children as their tongues are more flexible.
The parents suggested ___ in the hotel room but their kids were anxious to camp out during the trip .