One day,I saw Bruce _______in tne lake.A swims B is swim C swimming

One day,I saw Bruce _______in tne lake.A swims B is swim C swimming
One day,I saw Bruce _______in tne lake.A swims B is swim C swimming

One day,I saw Bruce _______in tne lake.A swims B is swim C swimming
C swimming
请及时采纳,多谢!

swimming

C swimming 有一天我看见Bruce 正在湖里游泳。
区别：
see sb do sth 看见某人做某事（动作已结束）
see sb doing sth 看见某人正在做某事（动作正在进行）