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Lesson scratch-resistant Vocabulary instant cramped foster alloy debris bonus diabetes Medical Benefits of Space Exploration laymen Use words from the box to replace other words in the following sentences, or to add to the sentences to clarify the meaning. 1. He felt very sick and did not have time to go to the hospital; so he went to a pharmacy to have an automatic check-up of his blood pressure. 2. Because I always leave my eyeglasses everywhere without putting them in their case, I need to buy a pair which is not affected by falls, sand, or dust. 3. Broken pieces from the comet were seen in the earth's atmosphere. 4. We could not move in the small room we were put into. 5. Brass is a mixture of copper and zinc. 6. He was paid his salary plus an additional sum. 7. Space explorations help encourage and promote medical achievements. 8. As ordinary people do not know the technical names of diseases, specialized doctors use more common and familiar words. 9. This medical center treats patients with irregular sugar level in their blood. Focus on Language Modals Modal axiliairies are part of the verb phrase. The rules of English grammar do not allow the use of more than one modal in a sentence; as a result, we use one modal and the periphrastic (or roundabout) meaning of the others