1. Mr. Hall illustrates the materials ....his lectures diagrams and

1. Mr. Hall illustrates the materials ....his lectures diagrams and other colourful visuals. 2. You can easily find many technical journals ... this issue our University library. 3. Most ....automobile carburetor engines used today operate mainly gasoline. 4. Weather is the effect four forces, so we have it different ... summer and ... winter. 5. This field of knowledge is very interesting because it deals computer- aided design. 6. Our planet, the Earth, belongs our children, so one should take good care ... its soil .... the future.