20.　 Seldom have I heard ___ beautiful music.

A. so　　　　 B. such　　　 C. those　　　 D. how

19.　 ___ six years since I began studying English.

A. They are　 B. It was　　　 C. It is　　　　 D. It had been

18.　 The number of students in this school is larger than ___.

A. that　 B. that in them　 C. those in theirs　 D. that in theirs

17.　 Most animals have little connection with ___ animals of ___ different kind unless they kill them for food.　　 A. the; a　　 B. /; a　　 C. the; the　　 D. /; the

16.　 ___ can conquer nature.

A. The man　　 B. A man　　 C. The men　　 D. Man

15.　 After graduation, Jack turned ___.

A. a writer　　 B. the writer　　 C. writer　　 D. writers

14.　 The teacher entered the classroom, ___ book in ___ hand.

A. a; a　　 B. the; the　　 C. a; the　　 D. /; /

13.　 ___ Einsteins did manage to send ___ Einstein to a technical school.

A. /; a　 B. An; an　 C. The; /　 D. /; /

12.　 We always have ___ rice for ___ lunch.

A. the; /　　 B. /; a　　 C. the; the　　 D. /; /

11.　 ___ doctors and ___ nurses should care for their patients.

A. The; the　 B. /; /　 C. The; /　 D. /; the