1 Do people chop down a lot of trees every year?
How many trees do people chop down every year?
2 Did she offere you a cup of tea?
Who did she offere a cup of tea?
3 Has someone stolen Ben's bike?
Whose bike has stolen?
4 Will they build more bus lanes?
What will they build more?
5 Have they just written the answers?
What they have just written?