Put each verb in brackets into the present simple or continuous, or the past simple or continuous.

a) 'What (you do) do you do ?' 'I'm an engineer.'
b) The door was open so the dog (run) into the living room.
c) When we arrived home Jan (sit) outside the door.
d) Can you help me? I (not understand) Spanish.
e) At the beginning of the film I (realise) I'd seen it before.
f) I'm sorry, I can't talk long. I (study) for an examination.
g) At the moment of the earthquake Pat (read) in bed.
h) I'll phone you as soon as I (know) the results.
i) I (stay) at the Hotel Tirol. Why don't you call me?
j) 'What (you do) when you saw the snake?' 'I ran!'