SIMPLE PAST vs PRESENT PERFECT

I (just / finish) my homework.

Mary (already / write) five letters.

Tom (move) to this town in 1994.

My friend (be) in Canada two years ago.

I (not / be) to Canada so far.

But I (already / travel) to London a couple of times.

Last week, Mary and Paul (go) to the cinema

(they / spend) their holiday in New Zealand last summer?

(you / ever / see) a whale?

I (be / never) to the Grand Canyon National Park.