People now have to find as many ways as possible_______they can solve the problem of pollution.(Which is wrong?)
Can you tell us what horses _______?
He said that he didn’t know ______ to deal with the matter, so I left.
The way of life he was used to _______ when he came to study in America.
He said that we should protect the ancient civilization from _______.
She told us what she bought yesterday ________ a few apples and some clothing.