22. One learns a language by making mistakes and ______ them.
Lee was faced with the of whether or not to return to his country after he got the doctor's degree in America
We left the small town, ______ clearly_____ no need to stay.
There are frequently reports of accidents as fireworks ______, stored or transported.
Plastic bottles can be recycled but they need cleaning thoroughly, _______ they?
Of all the methods they provided, ______ is of any help for solving the math problem.