26.　 I knew nothing about it ________ he told me.

A. if　　 　　　　　B. after　　　　　　 C. until　　　　　 D. because

25.　 She has had another baby ________ we met.

A. when　　　　　 B. after　　　　　　 C. before　　　　　 D. since

24.　 She had studied Russian for three years ________ she began to learn English.

A. before　　　　　 B. if　　　　　　　 C. after　　　　　 D. because

23.　 She had to do everything ________ her husband died.

A. before　　　　　 B. after　　　　　　 C. when　　　　　 D. while

22.　 _______ I am washing, she is cooking.

A. While　　　　　 B. After　　　　　 C. Before　　　　　 D. As soon as

21.　 He kept quiet ______she began to speak.

A. when　　　　　　 B. if　　　　　　 C. whether　　　　　 D. or

20.　 Neither she ________ I am a teacher. We are both students.

A. or　　　　　　　 B. and　　　　　　 C. nor　　　　　　　 D. but

19.　 Come here early tomorrow, ______you’ll see her.

A. or　　　　　　　 B. and　　　　　 C. but　　　　　　　 D. because

18.　 _____ Australia is very large, the population is quite small.

A. But　　　　　　 B. Or　　　　　 C. If　　　　　　　　 D. Though

17.　 In the old days the poor children couldn’t go to school.

They could ______read ___ write when they grew up.

A. both…and　　　 B. either…or　　 C. not only…but also　 D. neither…nor