Tom, turn down the music. Why ________ you make such a big noise while your baby sister is sleeping?
. When ____ a new word, you’d better _____ a dictionary.
. After the quarrel, I tried all my best to fix the misunderstanding between us, but all my efforts seemed ______.
. -- Better get down to your work, Jack. --- _____________.
. If you use another method to solve this problem, you’ll probably ______ it.
. My hometown,_______ I spent my happy childhood, has changed a lot.