Exercise 83
1. breakfast 2. school 3. morning 4. homework 5. dinner

Exercise 84
1. bear 2. run 3. kinds 4. pandas 5. food

Exercise 85
1. safe 2. tea 3. people 4. caffeine 5. drink 6. sleeplessness

Exercise 86
1. common 2. dolphins 3. discover 4. people 5. kill 6. creatures

Exercise 87
1. president 2. children 3. political 4. letters 5. family 6. life

Exercise 88
1. sate 2. tests 3. blindfold 4. perceive 5. ability

Exercise 89
1. jeans 2. pants 3. been 4. sold 5. demand(s) 6. designed

Exercise 90
1. built 2. builders 3. stones 4. brought 5. stonehenge 6. observatory

Exercise 91
1. century 2. labaratory 3. lichens 4. world S. half 6. chemical

Exercise 92
1. moon 2. place 3. earth 4. atmosphere S. air/atmosphere 6. live

Exercise 93
1. islands 2. crust 3. water 4. layer 5. ocean 6. volcano

Exercise 94
1. park 2. people 3. school 4. place 5. students 6. Called

Exercise 95
1. diet 2. nutrients 3. meat 4. found 5. eat 6. vegetarians

Exercise 96
1. TIME 2. Zuckerberg 3. student 4. US 5. Facebook 6. users

Exercise 97
1. animals 2. pod 3. dolphins 4. relation 5. swimmers 6. sharks

Exercise 98
1. april 2. food 3. jokes 4. spaghetti 5. BBC 6. penguins

Exercise 99
1. countries 2. job 3. training 4. astronauts 5. Japanese 6. space

Exercise 100
1. sad 2. hotel 3. music 4. building 5. pool 6. swimming

Part 2 !