1. the teacher asked questions at the lesson.(what) 2. he livis in london.(where) 3. they will help us tomorow.(wher) 4. there is some juice in the glass.(what) заранее огромное

1. What did the teacher do at the lesson? (Примечание: тут не уверен. Вариантов может быть масса).
2. Where does he live?
3. When will they help us?
4. What is that?