I haven’t finish my homework________.

        A. yet  B. never  C. ever  D. already.

Have you ________thrown any litter on the ground?

A. already

B. ever

C. never

D. yet

"Have you ____ been to Beijing?""No,never．"

　　A．never　　B．ever　　C．already D．yet

完形填空

　　Once a rich woman invited Martin Brown, a famous singer, to sing for her friends. But she 1 him to have dinner with them. She told him to eat 2 the servants (佣人).

　　After the meal Martin stood up and said to the servants, “ 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.