Only through constant practice can the ability of using a foreign language be _______.
Because of the strong sun Mrs. William's new dining room curtains _____ from dark blue to gray within a year.
I asked the tailor to make a small _____ to my trousers because they were too long.
It was necessary to _____ the factory building as the company was doing more and more business.
We can't _____ one to change the habits of a lifetime in a short time.
American women were _____ the right to vote until 1920 after many years of hard struggle.