11. His wife is quite lazy. Her reluctance to wash her own clothes is a case _____ point.

A. in

B. on

C. to

D. for

12. His work is only _____, certainly not distinguished.

A. fair

B. remarkable

C. good

D. wonderful

13. Hot metal _____ as it grows cooler.

A. contracts

B. reduces

C. condenses

D. compresses

14. Housewiver who do not go out to work often feel they are not working to their full _____.

A. capacity

B. strength

C. length

D. possibility

15. How close parents are to their children _____ a strong influence on the character of the children.

A. has

B. have

C. having

D. to have

16. I _____ with thanks the help of my colleagues in the preparation of this new column.

A. express

B. confess

C. verify

D. acknowledge

17. I always _____ what I have said.

A. get to

B. see to

C. lead to

D. hold to

18. I am not used _____ to like that.

A. to being spoken

B. to speak

C. being spoken

D. to speaking

19. I am sorry that I must _____ your invitation owing to a previous appointment.

A. decline

B. reject

C. accept

D. receive

20. I appreciate _____ to your home.

A. to be invited

B. to have invited

C. being invited

D. having invited