Tom's mother kept telling him that he should work harder, but ______didn't help.
______for the free tickets, I would not have gone to the films yesterday.
If it were not for the fact that she ________ sing, I would invite her to the party.
The leader in charge insisted that Anhui TV Station _________ a program to raise academic levels, which suggested that he _________ middle school students.
—Tom, your foreign teacher speaks Chinese fluently!—Oh, she has lived in China for six years, otherwise she _______ such good Chinese.
Unfortunately, the computer system ________ suddenly while they were searching for some information on the Internet.