Раскройте скобки употребляя глаголы в Present Simple, Present Continuous, Past Simple

Раскройте скобки употребляя глаголы в Present Simple, Present Continuous, Past Simple или Future Simple 1)We newer (swim) in the ocean. 2)We (swim) in the lake very often last summer. 3)My friend centainly (swim) in the Black Sea next month. 4)We usully (go) swimming to the swimming pool. 5)Look at the boys! They (swim) on such a cold day.