1) The scientist afternoon.
- (perform) an experiment at 2 o'clock yesterday
2) How
(the thief/break into the museum?
3) The teenager
the police
(vandalise) a statue when
(catch) him.
4) Alexander Bell
(not/invent) electricity.
5) Tom
(sketch) a drawing while Andy
(paint) a portrait
(Ken/go) to the art exhibition yesterday?
