13 Tenses

I usually (a)   (swim) at this hour.

It's 10 o'clock in the morning now.

By noon today, I (a)   (swim) for 2 hours.

I (a)   (swim) in my neighbour's pool now.

Probably I (a)   (swim) more than 10 laps tomorrow.

I (a)   (swim) in the sea countless times.

I (a)   (swim) for many years before Priya picked up the sport.

Yesterday, I (a)   (swim) 10 laps.

I (a)   (swim) at least 1000km by the end of the year.

I (a)   (swim) since I was 7 years old.

I (a)   (swim) with David last night when Bob arrived.