1. Helen (DID not want) to go to the cinema with us yesterday evening
because sheHAD already (seeN) this film. 2. When I (arriveD) at the party some of my friends HAD already (goNE) home. 3. When Jasper (cAme) back home yesterday evening his
parents (HAD
not goNE ) to bed. 4. During his last holidays Fred (visitED) his native town
where he (LIVED/HAD liveD) in his childhood.
6. Mark (HAD not understOOd) the problem until I (explainED) it to him.