填空。 Once a rich woman invited Martin Brown, a famous singer, to sing for her fiends. But she 1 him to have dinner with them. She told him to eat 2 the servants. After the meal Martin stood up and said to the servant, 'Now, my good friends, I 3 for you.' He sang several songs and the servants were quite 4 . Then the rich woman asked 5 to come to the sitting-room. 'We are waiting for your songs. 6 you ready?' the woman asked. 'I am sorry,' Martin said. 'I have sung 7 . I usually 8 once in one evening, and I can't sing 9 '. And with a polite ' 10 ', he left the rich woman's house. (     )1. A. doesn't invite (     )2. A. with (     )3. A. sang (     )4. A. sad (     )5. A. the servant (     )6. A. Were (     )7. A. ever (     )8. A. sings (     )9. A. one (     )10. A. Good night B. don't invite B. for B. will sing B. bored B. the friend B. Is B. already B. will sing B. two B. Good morning C. didn't invite C. at C. sing C. exciting C. the woman C. Are C. never C. sing C. once C. Good afternoon D. haven't invite D. in D. was singing D. happy D. the singer D. Be D. yet D. sang D. twice D. Good day