Complete the sentences with the correct form of the verbs in brackets.
1 What time _______________ (it / start)?
– It _______________ (start) at 8 pm tonight.
2 Where _______________ (you / go) now?
– I _______________ (go) for a walk.
3 Where _______________ (she / work)?
– She _______________ (work) in a laboratory.
4 Who _______________ (you / call) a moment ago?
– I _______________ (call) a friend.