Question

David left the party before we arrived there.

--> After

The last time she went to the zoo was four weeks ago.

--> She hasn't

I haven't come there for two years

--> I last

She last saw him many years ago.

-->It's many years

The last time I went to the sea was three years ago,

-->I haven't

I have never stayed in such an expensive hotel before.

-->This is

Answer 1

David left the party before we arrived there.

--> After David had left the party, we arrived there.

The last time she went to the zoo was four weeks ago.

--> She hasn't gone to the zoo for 4 weeks.

I haven't come there for two years

--> I last came there 2 years ago.

She last saw him many years ago.

-->It's many years since I last saw him.

The last time I went to the sea was three years ago,

-->I haven't gone to the sea for 3 years.

I have never stayed in such an expensive hotel before.

-->This is the first time I have stayed in such an expensive hotel.