64.

Answer and Explanation

Your Answer is

Correct Answer is G

Explanation

According to the meaning of the text, that refers to the previous bucket, so water...from the bucket (item G) is correct.

Item H: in the bucket has a wrong meaning.

Item J: It is easy to be understood as "keep a plastic bucket in the bath and water the tree", the author cannot water the tree while taking a bath, so the expression is wrong.