1)put the verb in bracket in present simple,present continious,past simple ,past continuous or present perfect 1)john........(trip) and.....(cut) his knee as he .....(walk )2)

1)put the verb in bracket in present simple,present continious,past simple ,past continuous or present perfect 1)john........(trip) and.....(cut) his knee as he .....(walk )2) luke ............(work) hard for the last three weeks.3)People........(look)at the volcano as lava...... (flow) down during the eruptin last night.