You are the most direct young woman I have ever ___.

People who can’t ___ between colors are said to be color-blind.

It is vital that the work ___ in time.

If you ___ in behaving in this way you will bring yourself nothing but trouble.

___ is known to all,China will be an ___ powerful country in 20 or 30 years’ time.

When ___, water will be turned into steam.

Please write a report ___ the above subjects are to be covered.

___, could you get me a Turkish conversation book?

He found ___ difficult to study maths.

Parents, teachers in schools and communicators in or using the mass media are all capable of ___ our potential interests.