9. Choose one of the following quotations and explain what it means. Do you agree with the quote? Write a short paragraph (60-80 words) to express your opinion.

1. “Genius is one percent inspiration and ninety-nine percent perspiration.”

Thomas Edison

2. “To do two things at once is to do neither.”

Publius Syrus (Latin author).

3. “One friend in a lifetime is much; two are many; three are hardly possible.”

Henry Adams (American journalist, historian and novelist).

4. “A man who dares waste one hour of time has not discovered the value of life.”

Charles Darwin.

GRAMMAR IN USE

These tasks can help you to practice Conditionals: Type 0 - Type 1. Read grammar rules on p.184-185 and then do the exercises.

10. Match the items in two columns in order to make correct Type 0 conditional sentences, as in the example.

Example. If you wash woolen clothes in hot water, they shrink.

Wash woolen clothes in hot water.	They shrink.
Mix blue and yellow.	They die.
Don’t water plants.	It becomes ice.
Put water in the freezer.	It falls to the ground
Leave metal out in the rain.	It sinks.
Drop something.	You get green.
Throw a pebble into the sea.	It gets rusty

11. Put the verbs in brackets in the correct tense. Add a comma where necessary.

1. Please call me if you ….. (to need) any help.

2. If he ….. (to arrive) on time we’ll discuss our plans before we go out.

3. She won’t go to Australia unless I ….. (to pay) for her tickets.

4. ….. she ….. (to be) angry if we don’t go to the meeting?

5. If you ….. (to work) hard you may be promoted.

6. If you help me I ….. (to repair) it.

7. If you leave now you ….. (to get) there before it closes.

12. Match two parts to form conditional sentences.

If iron is left in contact with air and water,	it rusts.
In the event of collision,	unless there are better safety measures.
If heat is applied,	download them onto your computer.
If you want to study the files from the Internet,	we are successful
The tests won’t be continued	we will estimate the experimental error.
If we run an additional test,	the substance decomposes.
If we work hard,	the airbag will inflate.

Unit 15

LEAD-IN

1. Match the geometric figures to their names.

1	2	3	4	5	6	7	8
A Square	B Rectangle	C Arc	D Triangle	E Hexagon	F Cylinder	G Circle	H Cube