Nobody believed his reason for being absent from the class ________ he had to meet his uncle at the air port．

A．why

B．that

C．where

D．because

People have always been curious ________ how living things on the earth exactly began．

A．in

B．at

C．of

D．about

In the dark forests ________, some large enough to hold several English towns．

A．stand many lakes

B．lie many lakes

C．many lakes lie

D．many lakes stand

Your story is perfect; I’ve never heard ________ before．

A．the better one

B．the best one

C．a better one

D．a good one

There have been several new events ________ to the program for the 2008 Beijing Olympic Games．

A．add

B．to add

C．adding

D．added

I was still sleeping when the fire ________, and then it spread quickly．

A．broke out

B．put out

C．came out

D．got out

Engines are to machines ________ hearts are to animals．

A．as

B．that

C．what

D．which

You can find whatever you need at the shopping centre, ________ is always busy at the weekend．

A．that

B．where

C．what

D．which

What we used to think ________ impossible now does seem possible．

A．is

B．was

C．has been

D．will be

－ I’m terribly sorry that I made your table cloth dirty．

－ ________．

A．Never mind

B．Don’t mention it

C．That’s right

D．Sorry