Ex. 6. Insert the needed verbs: 1. Chemistry is the science which ... with materials and their properties. 2. We think that the exhibition of our achievements will ... at the end of September. 3. This scientist ... a great contribution both in chemistry and physics. 4. All his life he worked in the field of chemistry, and we can say that he ... his life to science. 5. All the changes which ... this reaction play a very important part. 6. Later Lavoisier ... the concept of the chemical elements. 7. This article … with the development of our industry.
When you go with a child in a sandbox, then make sure to check all toys or sign that you take with you, it is very convenient. All the toys that are in the sandbox during the game at the time. Therefore, you should not take there expensive cars and toys, because they damage you may cause financial and psychological damage. Expensive good toys to play better at home.All children who will be attending the sandbox, much stronger will be interested in other people's toys, rather than those in which they play every day. Therefore, the child will want to seek out the red shovel, even if in his hand at this point is the same, but only a different color.Because of this all the toys that are scattered all over the sandbox, considered at the time draws. But only while the owner of certain toys will not be going home and not going to take them. Not to accidentally pick up someone else's toys, should their mark. This can be done with a simple marker that sign CDs, he also swept up well and is not erased from playing with sand and water.As for the big toys, such as trucks, bicycles, scooters, they usually stand on the sidelines to take them with us, be sure to ask permission.