1. What did Andersons buy?
2.Have they already met Mr Smith?
3.When did they met Mr Smith?
4.Are they going to invite him?
5.What does she teach?
6.What was he interested in?
7.Do they want to take a trip to England?
8.Where did he meet them?
9.What does Mary clean every day?
10.At what time/when did the train arrive?