When the Principal entered the class, a student 
on the blackboard.
<u>Explanation</u>:-
The given sentence is in past continuous tense.
The past continuous tense, also referred to as the past progressive tense, is used to express actions at a particular moment in the past. The action started before that moment but has not finished at that moment.
It is composed of two parts : the past tense of the verb "to be" (was/were), and the base of the main verb "+ing".
1) steel
2) glass
3) copper
4) aluminium
5) timber
6) rubber
7) plastic
not entirely sure abour 3 and 4
Answer:
Examples and Statistics
Explanation:
The examples being 'they sign up to build a school for a gold star on their resume, but they have no real building skills and take jobs away from local construction workers' and 'they arrive to teach English but instead take selfies with the locals'. The statistics are the resources they've used to write this (ex. Schulten, Rolfe, Michaels, etc.) and the information they've drawn from it.
B. Taking deep breaths or going for a walk helps the body relax
The reason I would not write to my teacher the way I write to my friend is because the way you should be writing to your teacher is with respect and be professional.
