20. Put the words in brackets into the correct form.

An 1) analysis (analyse) of 1 million students in a New York school district 2) showed (show) that school cafeteria food affected IQ scores to an 3) astonishing (astonish) degree. When 4) preservatives (preserve), coloring, dyes and artificial flavors were removed from the cafeteria menu 5) reserarchers (research) found that 70,000 students performed two or more IQ grade levels 6) higher (high) than before.

According to the 7) respected (respect) Multiple Intelligences Theory, pioneered by Harvard professor Howard Gardner, there are a variety of intrinsic approaches and skills we use to 8) perceive (perception), understand, and 9) shape (shape) our world − in other words, several different kinds of intelligence.

21. Find and correct the mistakes.

1. Personality, motivation and hard work are needed for success in all ours (should be our) endeavors.

2. Generally, it is IQ that is used for choosing employees from (should be at) work place.

3. If people taking an IQ test today were scored in the same way as people 50 years ago, then 90% of they (should be them) would be classified in the genius level.

4. Your brain was (should be is) capable of making a virtually unlimited number of synaptic connections or potential patterns of thought.

5. Visual (should be visually) intelligent people best understand the world through visualization and spatial orientation.

22. L ook at the pictures and make up a student's story of passing iq test yesterday. Use past indefinite tense.

23. Underline the correct tense.

1. Today, more than 250 million Slinkys _______ worldwide.

a) have been sold b) were sold

2. I ________ you at the lectures last week.

a) haven't seen b) didn't see

3. Jack's sister _______ her friend in London last year.

a) has visited b) visited

4. Silly Putty ________ by the crew of Apollo 8 to secure tools in zero gravity.

a) has even been used b) was even used

5. You __________ her, have you?

a) haven't told b) didn't tell

6. The microwave oven is now a standard appliance in most American households, but it _________ around since the late 1940s.

a) has only been b) was only

7. I _______ at CERN for five years (but I no longer work there).

a) have worked b) worked

8. I ________ to work every day this week.

a) have walked b) walked

24. Follow the directions. Use troublesome verbs.

TROUBLESOME VERBS: raise/rise, set/sit, lay/lie
transitive	intransitive	Raise, set, and lay are transitive verbs; they are followed by an object. Rise, sit, and lie are intransitive; i.e., they are NOT followed by an object. Note: Lie is a regular verb (lie, lied) when it means "not tell the truth".
(a) raise, raised, raised Tom raised his hand.	(b) rise, rose, risen The sun rises in the east.
(c) set, set, set I will set the book on the desk.	(d) sit, sat, sat I sit in the front row.
(e) lay, laid, laid I am laying the book on the desk.	(f) lie, lay, lain He is lying on his bed.