Надо раскрыть скобки, употребляя глаголы в past simple. 1) when their boys (to watch) tv? 2) who (to bake) a delicious lemon pie? 3)why mr smith and mrs smith (to have) a wonderful time last night? 4) where they (to be)?

1 When their boys watched TV?
2 Who baked a delicious lemon pie?
3why Mr Smith and Mrs Smith had a wonderful time last night ?
4 where they were?