I, who ______ your close friend, will try my best to help you out of trouble.
There are hundreds of visitors ___ in front of the Art Gallery to have a look at Van Gogh’s paintings.
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.