—What do you think about the new teacher?
—________ the new teacher is an elegant lady, she can be extremely difficult to work with.

Your parents have given you all the facts _____ you can judge for yourself easily

You shouldn’t have failed the job interview. Why didn’t you do ___ the expert suggested?

___________there are many different types of food, some animals spend their lives eating only one type.

    you understand this rule, you’ll have no further difficulty.

_______cloning human embryos is not legal in many countries, some scientists are already pushing ahead with research in order to produce a cloned human baby.

People often have this belief ___development is bad for the environment, but this does not have to be true.
A which     B whose       C that       D when

We must never think that we are good at everything __________ others are good at nothing.

There is no doubt _________ the world climate has been changing in recent years.

Will you help him________ you see an old man in trouble ?