3. If Mary can _______ a solution by herself, I should be very grateful.A. come up with 4. Mr. Chen gradually ________ a knowledge of the subject. C. acquired 5. ________ numerous at the turn of the century, the number of tigers in India had fallen to 2,500 by 1969. B. Although 这是带连词的形容词短语作状语6. The old man has four children, the youngest of _________ is Jack. C. whom 7. I regret _______ him a thief, but I regret even more his stealing my watch! A. to call 本句第一个regret是遗憾的意思,根据后句判断 8. I don't like the paintings.It doesn't well with the walls of the room. C.go 应该填不及物动词9. It is not considered ________ in this country to touch the head of an adult person. B. respectful 10. -What do you think of Johnny’s latest novel?-Well ,I was really attracted by the first half of it ,but quite boring.D.the rest was11. -Serina has been watching the TV series the whole night.- .D.So have her parents12. We teenagers are reminded to our manners in public places.A.mind 13. These folk songs are familiar _________ the local people . C. to 14. Some people hope, the rains will return and ease the hardship ______ the peasants of North China. C. facing 15. Bumper harvests are guaranteed even ________ drought . C. in the event of