Simple past & present perfect.

last summer: I _____.

• have swum

• swam

This month: he _____.

• went

• has gone

Since Monday: he _____.

• didn't walk

• hasn't walked.

Four days ago: it _____.

• has rained

• rained

This weekend: we _____.

• have played

• played

When I was five: I _____.

• have broken

• broke

Yesterday: the swallows _____.

• came

• have come

In my life: I _____.

• wasn't

• haven't been

Today: he _____.

• didn't see

• hasn't seen

In 1919: _____?

• did they ride

• have they ridden