This sentence is written in past perfect tense:

I had already finished my breakfast, when the package arrived.

True or False?

We use the Past Perfect tense in order

to indicate a sequence in past events, and we use the past perfect tense for the second event in the past.

Fill in the correct tense: Past Simple or Past Perfect

Last

summer, Tom, Richard, and Harry

Is this sentence grammatically correct? (true)

If we had not fought so hard, we would not have managed to improve this planet's future. 

If I ______________ your keys, I _________________ you immediately.

Pick the correct context for the conditional type!