– How did you make contact with the travel agent, Tom？– Oh, that’s easy. I surfed the Internet and then called one _____ the telephone number is provided.

We are living in an age _____ many things are done on computer.

Crusoe’s dog became ill and died,         made him very lonely.

It is impossible for us to carry the stone statues, all of______ are too heavy.

----Have you found the mobile phone _____ you lost last week?----No, but I’ve just bought a new one.