Here are the answers to the exercise:
1. We (S) eat (V) a lot of garlic (O) to prevent the flu (ADV is not present in this sentence, but "to prevent the flu" is an infinitive phrase of purpose).
2. Asian diets (S) contain (V) a lot of vegetables (O).
3. My sister (S) uses (V) a lot of suncream (O) in summer (ADV, specifically a prepositional phrase of time).
4. He (S) likes (V) cycling (O) in the park (ADV, specifically a prepositional phrase of location).
5. Mark and his father (S) are boating (V), (O is not present in this sentence, it is an intransitive verb).
6. My mother (S) cooks (V) food (O) with very little cooking oil (ADV, specifically a prepositional phrase).
7. People (S) in the countryside (ADV, specifically a prepositional phrase of location) do (V) not have (V) much stress (O).
8. You (S) can use (V) eye drops (O) for your tired eyes (ADV, specifically a prepositional phrase of purpose).
9. Green tea (S) is (V), (a popular drink in my country is an appositive phrase and can also be considered as O)
10. Physical activities (S) help (V) keep (V) you (O) strong and active (ADV, specifically a predicate adjective).
Here are the simple sentences:
1. The Japanese eat healthily
3. My family often goes cycling in the countryside.
4. My sister likes surfing the Internet.
5. Soft drinks are not good for your health.
7. Coloured vegetables are good food.
9. My favourite outdoor activity is cycling.
11. We need vitamin A for our eyes.
13. Being active helps keep you fit.
Note that a simple sentence is a sentence that has only one independent clause, i.e., a clause that can stand alone as a complete sentence.
Here are the answers for Exercise 3:
1. Jestic (S), ate (V), dinner (O)
2. The bungry Jessic (S), ate (V), a large dinner (O)
3. The hungry lowis (S), ate (V), a large dianer (O)
4. I (S), cannot drink (V), war mikk (O)
5. She (S), opened (V), the dagt (O)
6. Jenny and I (S), opened (V), all the gifts (O)
7. Jack (S), likes (V), walking (O)
8. Jack and lill (S), like (V), walking (O)
9. Ioe (S), waited (V), for the train (O)
10. (This sentence appears to be incomplete or incorrect)
11. Mary and Samantha (S), took (V), the bus (O)
12. I (S), looked (V), fer (this should be 'for') Mary and Samattha (O) at the bas (this should be 'bus') statien (this should be 'station')
Here are the answers to the exercise:
1. We avoid sweetened food and soft drinks.
2. My dad and I love outdoor activities.
3. You should wear a hat and suncream.
4. My mother read and downloaded the health tips.
5. You and your brother are active.
6. Your room looks dark and untidy.
7. The Japanese work hard and exercise regularly.
(Note: I corrected 'Ispanese' to 'Japanese' in the last sentence as it appears to be a typo)