Read the following paragraph and answer the questions below: Concentration is the key 1. How do you know when you are really concentrating? When you are concentrating, time \( \qquad \) Before you know it, a hour or two has passed. Your attention is fully occupied by the material you are reading. Your thoughts are so completely focused on what you are reading that you dont see or hear anything else. 2. This is the brain condition and state \( \qquad \) mind you should strive to attain in order to read purposefully and \( \qquad \) high speed, and to study effectively. Researchers have found that people who are able to/can be able to concentrate really well have the following in common \( \qquad \) the rhythms of their brain show more or \( \qquad \) the same average frequency. At this frequency their brains is both alert and relaxed. 1. Complete the common expression in the second sentence of the first paragraph. Time \( \qquad \) - (1) 2. Correct the article error in par. 1. 3. Correct the concord error in par. 1. 4. Fill in the missing apostrophe in par. 1. 5. Rewrite the following sentence in active voice: Your attention is fully occupied by the material you are reading. (2) 6. Provide the correct prepositions that should be used in the first sentence of par. 2. Write out the sentence and underline the two prepositions, Write down the correct option. (2) 7. Choose between the use of are able to or can be able to in par. 2. (1) 8. Choase the correct punctuation mark that should be written directly after the word common. Is it a comma, a colon or a hyphen? Give a reason for your choice. 8. Complete the phrase in the second last sentence of par. 2. (2) (1) 9. Correct the concord error in the last sentence of par. 2. (1) 10. Provide an antomym and a synonym for relaxed in par. 2. (2)