(FATEC 2016) - Question Medium of English

In a small town, the local high school is organizing a science fair where students have to present experiments that involve both the principles of physics and the use of the English language. John, a senior student, is working on a project to demonstrate the relationship between the current passing through a conductor and the voltage applied to it. As part of his presentation, John needs to explain the steps of his experiment and the scientific concepts involved using proper English. Which modal verb should John use to express the necessity of following the experiment's steps in a precise order, considering the safety and accuracy of the results?

Olivia and her brother, Max, love to play in the backyard. They often engage in a game of hide and seek. Olivia hides behind the tall tree while Max seeks her. Together, they laugh and run around the garden. Complete the sentences with the appropriate forms of the verbs given in brackets.

Imagine you are writing an essay about the importance of environmental conservation. Use connectors to express addition, condition, opposition, contrast, conclusion, and synthesis to construct a coherent argument about the topic. Write a paragraph that demonstrates the use of these connectors in a meaningful way.