All of us know, color-blind people often find it difficult to __ between blue and green.

We expect Mr. White will ____Class One when Miss Jane retires.

You must pay import ____on certain goods brought into this country.

Unless all the members agree to __8__to the plan there may be further development in the course of action.

When the idea of winning in sports is carried to excess, ____competition can turn into disorder and violence.

I am sorry I have no time at present to ____more detail or give you an account of other cities of interest.

The ____of AIDS has led to an expansion in research seeking a cure.

I am ____grateful for the many kindnesses you have shown my son.

____The water left in the kettle, the doctor put several things he unwrapped from a handkerchief.

When I got out of the car and walked about among them, ____one old man who shook his head disapprovingly, they all began to cheer .