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| I would like to learn ....... . | ~to swim^ | |
| I don\'t enjoy ....... . | ~swimming^ | |
| I ....... in the sea every day since I was a child. | ~have swum^ | |
| I ....... in the lake yesterday. It was freezing! | ~swam^ | |
| Can your brother ....... ? | ~swim^ | |
| A fish ....... by moving its tail from side to side. | ~swims^ | |
| Why is your hair all wet? - I ....... in the lake. | ~have been swimming^ | |
| John was very tired last night. He ....... all day. | ~had been swimming^ | |
| John was very tired last night. He ....... from England to France. | ~had swum^ | |
| At this time next week I ....... in the Pacific! | ~will be swimming^ |