Answer:
2. we use a clock (to tell) time.
3. you use this switch (to turn on) the computer.
4. emily needs a mobile phone (to call) her friends.
5. A fridge is useful (to keep) food cool.
6.Paula has a CD player (to listen) to her favourite music on the train to work .
7. Carlos went to university (to study) computer science.
8.My brother is saving all his money (to buy) the latest computer game.
Explanation:
B.
<span>Unemployment is high in many fields, but there are jobs available in telecommunications.
A comma is used when it is placed after the end of one independent clause and the beginning of another which follows one such clause. The two independent clauses must be joined with words known as co-ordinating conjunctions. Examples of such words are, but, and,or so etc.
In this sentence but is used, </span>preceded by a comma so it is the right one.
The answer is D
Because a run on sentence has no pause or period you have to add one in order to separate the sentences
Hope this helps
Speed is the magnitude of its velocity(the rate of change of its position), it is thus a scalar quantity. Base on that, the possible non example for speed is the acceleration, measurement of the mass, the volume, and any measurement but not speed. I hope you are satisfied with my answer and feel free to ask for more