Exercise 4. Put questions with the question word given:

1. We have been friends since childhood. ( since when )

2. The rain hasn’t stopped yet. ( general question )

3. The film has been on for a week. ( how long )

4. He will have worked as a teacher for 20 years by next September. ( who )

5. The students have already started the discussion .( what )

1. Since when have we been friends?2. Has the rain stopped? 3. How long has the film has been on? 4. Who will have worked as a teacher for 20 years by next September?5. What have the students already started?