that boy was able to swim well when he was four .（同义句） that boy __swim well when he was 4.

来源：学生作业帮助网编辑：作业帮时间：2024/05/07 02:35:39

that boy was able to swim well when he was four .（同义句） that boy __swim well when he was 4.
that boy was able to swim well when he was four .（同义句） that boy __swim well when he was 4.

that boy was able to swim well when he was four .（同义句） that boy __swim well when he was 4.
could
不明白的再问哟,请及时采纳,多谢!

could

could哦