Although the traffic is not busy, he likes to drave at a ______ speed.

All the memories of his childhood had _______ from his mind by the time he was 65.

This river is so big that it is impossible to build a ______ under it without modern technology.

The ______ is nearly dead, so I can not start the car again.

When making modern cameras , people began to _______ plastics for metal.

With the help of the government , a large number of people _______ after the flood in 1991.

He always has a lot of _______ ideas in his mind , and sometimes we do not even know what he is thinding about.

Please be serious. I am not ______. You should consider it carefully.

We do not have a ______ school in our institute. The highest degree we provide for the students is a B.A. and B.S..