_____ matters most in learning English is enough practice.
______read the letter for you?
The boss said to the secretary, “If you work well, you ______ have a rise.”
— Alice came back home the day before yesterday. — Really? Where ______?
—We ______ that you would fix the TV set this week. —I’m sorry. I ______ to fix it this week, but I’ve been too busy.
______time went on, the people in the area came to realize how serious the environment had been polluted.