3 Insert the missing word.
Do
Example: you use the Internet?
they book hotels on the Internet?
he do a German course with a private teacher?
3 When you speak to your friends?
4 Marianna meet new friends at school?
5 Where you meet people?
6 What they buy on the Internet?
7 Trevor buy music in a shop or on the Internet?
8 Sarah and Nicky study French?​

3 Insert the missing word.
Do
Example: Do you use the Internet?
Do they book hotels on the Internet?
Does he do a German course with a private teacher?
When do you speak to your friends?
Does Marianna meet new friends at school?
Where do you meet people?
What do they buy on the Internet?
Does Trevor buy music in a shop or on the Internet?
Do Sarah and Nicky study French?​

Explanation:

In this exercise, we need to insert the correct form of the verb "do" into the sentences.

1. In the first example, we can see that the subject is "you," so we need to use the base form of the verb "do," which is "Do" in this case. The sentence becomes "Do you use the Internet?"

2. For the second sentence, the subject is "they," so we also need to use the base form of the verb "do." The sentence becomes "Do they book hotels on the Internet?"

3. In the third sentence, the subject is "he," so we need to use the third-person singular form of the verb "do," which is "does." The sentence becomes "Does he do a German course with a private teacher?"

4. In the fourth sentence, the subject is "you," so we need to use the base form of the verb "do." The sentence becomes "When do you speak to your friends?"

5. For the fifth sentence, the subject is "Marianna," so we need to use the base form of the verb "do." The sentence becomes "Does Marianna meet new friends at school?"

6. In the sixth sentence, the subject is "you," so we need to use the base form of the verb "do." The sentence becomes "Where do you meet people?"

7. For the seventh sentence, the subject is "they," so we also need to use the base form of the verb "do." The sentence becomes "What do they buy on the Internet?"

8. In the eighth sentence, the subject is "Trevor," so we need to use the third-person singular form of the verb "do," which is "does." The sentence becomes "Does Trevor buy music in a shop or on the Internet?"

9. In the ninth sentence, the subjects are "Sarah and Nicky," so we need to use the base form of the verb "do." The sentence becomes "Do Sarah and Nicky study French?"

By using the correct form of the verb "do" in each sentence, we ensure that the sentences are grammatically correct.