Human beings are different from animals _______ 
they can use language as a tool to communicate.
| A．in that | B．for that | C．in which | D．for which |
The thought ______ he might fail in the exam worried him.
| A．when | B．which | C．what | D．That |
My home village is no longer the same ______ it used to be.
| A．which | B．as |
| C．where | D．when |
The gentleman ______ you told me yesterday proved to be a thief.
| A．who | B．about whom |
| C．whom | D．with whom |
— Do you have the time? I've got something to tell you.
— Ok, ______ you make your story short.
| A．now that | B．even if |
| C．so long as | D．in case |
–— It is unwise for some people to drive and talk on a cell phone.
–— _______. It's very dangerous.
| A．I couldn't agree more | B．Not really |
| C．Good idea | D．That's great |