Present perfect vs Past simple

I ......... Peter last night.

• saw

• have seen

Answer explanation

saw porque está la expresión de tiempo del pasado simple: last night

Oh, really I ...... him since last summer. Is he Ok?

• didn't see

• haven't seen

Answer explanation

haven't seen cuando está en la expresión de tiempo "since, for, how long", usamos el presente perfecto.

...... this film before?

• Did you see

• Have you seen

Answer explanation

Have you seen porque está la expresión de tiempo "before" que indica antes de algo, usado en presente perfecto.

Yes, actually I ...... it last night.

• saw

• Have seen

Answer explanation

saw porque está la expresión de tiempo "last night" que significa anoche, usado en pasado simple.

What ...... last weekend?

• have you done

• did you do

Answer explanation

did you do porque está la expresión de tiempo "last weekend" que significa la semana pasada, se usa en pasado simple.

I ...... at home all weekend.

• stayed

• did you do

Answer explanation

stayed porque está la expresión de tiempo "all weekend" que significa toda la semana pasada, que usa en pasado simple.

So, Tom is your best friend. ...... Tom when you were in school?

• Have you met

• Did you meet

Answer explanation

Did you meet porque está la expresión de tiempo "when you were in school" que indica pasado simple.

Yes, we ...... friends for over 30 years.

• Have been

• were

Answer explanation

have been porque cuando en la expresión de tiempo está "for, since, how long" usamos el presente perfecto; ya que indican un inicio pero que aún no ha culminado.

...... a marathon?

• Have you ever run

• Did you ever run

Answer explanation

have you ever run porque usamos el presente perfecto con "ever" para preguntar experiencias de las personas.

Yes, last year I ...... the marathon.

• ran

• have run

Answer explanation

ran porque la expresión last year, indica pasado simple, algo que ya culminó.