完形填空。 My friend Mr. Smith is a famous doctor and has a hospital. So he has enough money to 1 all over the world. And he's been to a lot places of interest. He likes to 2 children and has a lot of little 3 . They often ask him to tell them all kinds of funny things he 4 . It makes them happy and his room is always full 5 children when he's free. It was my little son's seventh birthday yesterday. The boy wanted to 6 his old friend Mr. Smith to the party. He 7 Mr. Smith himself and told him about it. the doctor accepted his 8 happily. At half past seven the boy was waiting for his coming at the gate. 9 he saw his car, he ran towards him. Mr. Smith 10 on time, with a nice present in his hand. After dinner the children sat around the traveler and asked him to 11 them some funny stories. Mr. Smith agreed and his stories made them 12 again and again. At last th told them the funniest story. He said,' Once I reached a city 13 a foggy day. The fog was the thickest in the world …' Please wait a 14 , Mr. Smith,' said my son,' It's said the fog in London is the thickest in the world.' 'You're 15 , my clever boy.' Said the funny doctor.' The city had much fog that day …''What's it, the?' the boy couldn't wait to ask again. 'The fog was so thick that I couldn't see it at all,' the funny doctor said with a smile. (     )1. A. work (     )2. A. wait for (     )3. A. friends (     )4. A. read (     )5. A. with (     )6. A. send (     )7. A. knew (     )8. A. invitation (     )9. A. Before (     )10. A. came (     )11. A. speak (     )12. A. think (     )13. A. with (     )14. A. moment (     )15. A. sorry B. fight B. look over B. brothers B. wrote B. for B. ask B. caught B. things B. As soon as B. answered B. say B. laugh B. in B. day B. sad C. live C. play with C. workers C. thought C. of C. carry C. taught C. car C. Until C. said C. tell C. cry C. at C. week C. wrong D. travel D. look after D. classmates D. saw. D. by D. get D.  called D. money D. Since D. played D. talk D. fear D. on D. year D. right