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| When I was in London I ....... every day. | ~swam^ | |
| Look over there! Someone ....... in the river. | ~is swimming^ | |
| I don\'t really want ....... today. | ~to swim^ | |
| Shall we go ....... tomorrow? | ~swimming^ | |
| It\'s no surprise he was tired. He ....... the whole way across the lake! | ~had swum^ | |
| It\'s no surprise he was tired. He ....... the whole day! | ~had been swimming^ | |
| I ....... once a week since coming to Germany. | ~have swum^ | |
| I think I ....... every day on my holiday next month. | ~will swim^ | |
| My friend was quicker than me. She ....... already when I arrived at the pool. | ~was swimming^ | |
| Cats cannot ....... . | ~swim^ |