spent
v.v. to use money to buy things or to use time for a specific purpose. You can also use this word to describe using up energy until you are very tired.
v. to pay out money in exchange for goods or services, or to devote time or effort to a particular activity. Transitive — requires a direct object representing the resource being used.
I spent twenty dollars on a new book.
The company spent a significant portion of its annual budget on upgrading the office technology.
While the committee spent months deliberating on the proposed changes, they ultimately failed to reach a consensus before the legislative deadline.
The verb is transitive and takes a direct object. When used with time or money, it often takes the preposition 'on' before a noun or an '-ing' verb without a preposition.
I spent three hours for doing my homeworkI spent three hours doing my homeworkWhen 'spend' is used with time, the following action should be in the '-ing' form without the preposition 'for'.