Make up 5 different types of the questions to this sentence.
Over one billion people speak English as a second language.

Over one billion people speak English as a second language.

1. Do over one billion people speak English as a second language?

2. Which language do over one billion people speak as a second language?

3. How many people speak English as a second language?

4. As which language do over one billion people speak English?

5. More or less one billion people speak English as a second language?