----- I can ’t see the words on the blackboard clearly.

----- Why, your eyes need _____ perhaps you need _______ glasses.　

A. to examined, to wear　　　 B. to examine ,to wear

　 C. to be examined, to wear 　 D. examining, wearing

______ a good insulator , rubber is often used in cables.

　 A. Having been 　 B. To be  C. Be 　 D. Being

John was so sleepy that he could hardly keep his eyes ______.

A. open　　B. to be opened　　C. to open　　D. opening

—Good morning. Can I help you?

　　　　—I’d like to have this package _____, madam.

　　A. be weighed　　B. to be weighed   C. to weigh　　　D. weighed

Henry can’t attend the party _____ at Tom’s house at present because he is preparing the speech at the party _____ at Marie’s house tomorrow.

  　A. held; being held            B. to be held; to be held

  　C. to be held; held            D. being held; to be held