Past Simple VS Past Perfect

I  ​ (a)   the film even though I (b)   it before.

• enjoyed
• had enjoyed
• had seen
• saw ​

I got up late this morning so when I ​ (a)   at the station, the train (b)   .

• arrived
• had arrived
• had already left
• already left ​

I couldn’t speak to them because when I ​ (a)   , they (b)   out already.

• phoned
• had phoned
• had gone
• went ​

We realized that we (a)   before as soon as we ​ (b)   each other.

• had met
• met ​
• saw
• had seen

They (a)   in their house for twenty years when they ​ (b)   to sell it.

• had lived
• lived ​
• decided
• had decided

My sister ​ (a)   me a novel but I (b)   it.

• bought
• had bought
• had already read
• already read

As soon as I heard his voice, I ​ (a)   we (b)   before.

• knew
• had known
• had met
• met

When I ​ (a)   the door, the lesson (b)   .

• opened
• had opened
• had already be­gun
• already began

She (a)   the wall before the children ​ (b)   home.

• had painted
• painted ​
• came
• had come

The pupils (a)   the test when the bell ​ (b)   .

• hadn’t finished
• didn’t finish
• rang
• had rung