完形填空，通读下面的短文, 掌握其大意, 然后从各题所给的A、B、C三个选项中选出一个最佳答案。

Mr. and Mrs. Green were very worried about their son, Leo. He seemed to be dumb (哑的) ______ he was normal in every other way. Mr. and Mrs. Green tried everything to get him to ______, but with no success.

When Leo was six years old, the best doctors in the town ______ him carefully, but could find nothing wrong. And he seemed to be smart. It was just that he ______ spoke.

"There might be something wrong with his ______, and he doesn't know he's able to speak," one doctor said.

"But he can read and write," said Mr. Green. "We've written him notes, telling him that he can speak."

"It's certainly very ______," another doctor said. "Perhaps he'll be able to speak some day."

______ passed. Leo went to university. But he did not speak a ______ word.

Then one day, Leo was having a meal with his parents. Without any warning, he looked up from his ______ and said, "Pass me the salt, please."

Mr. and Mrs. Green were excited. "You spoke! You spoke!" they cried, "Why have you ______ so long to speak?"

"I didn't have anything to say," he said. "Until now everything was perfect. But you forgot to put salt in these potatoes."

1.A. because       B. when           C. though             D. before

2.A. speak         B. walk           C. play              D. laugh

3.A. taught       B. found         C. examined         D. asked

4.A. never         B. often          C. usually            D. always

5.A. back          B. hair           C. face               D. mind

6.A. unfair        B. strange        C. noisy              D. quiet

7.A. Hours        B. Weeks         C. Months             D. Years

8.A. good         B. right          C. single             D. new

9.A. chair       B. meal         C. hands             D. books

10.A. slept        B. walked        C. served            D. waited

By the time I got back to school, the bell______.

A. rang                 B. has rung

C. had rung              D. ring

—Did you see Tom yesterday? —No, I ___________ him for a long time.

A. didn’t see          B. hasn’t seen

C. saw                  D. haven’t seen

—Amy, can we give away these soft toys? We ________them for many years.

—Mom, but I want to keep the bear.

A. bought               B. had

C. have bought          D. have had

A. moves    B. moved    C. is moved    D. was moved

---I don’t think sixteen-year-olds _______ to drive.

---I agree. They aren’t serious enough at that age.

A. can allow            B. need be allowed

C. should allow          D. should be allowed

—We failed in the singing competition.  —_______. Better times are waiting for you.

A. No way               B. Best wishes

C. Cheer up             D. Good job

I still remember the college and the teachers ________ I visited in London years ago.

A. what                 B. who

C. that                D. which

The people there have met lots of difficulties, but they haven't ________ hope.

A. picked up             B. given up

C. looked for            D. waited for

Thanks to the Internet, different kinds of information ________ in a short time.

A. can be learned      B. has been learned

C. can learn             D. has learned