Question

A lot of energy ...,..wasted on finding the treasure

Answer 1

The answer is 'was'.

A lot of energy was wasted on finding the treasure.

Was - It Is a verb used in the past tense for the 'be'.

Verb - In English grammar, the verb is a word which is an integral part of the sentence that is used to denote the action related to the subject.

Since the sentence is in past tense, the verb will also be in past tense.

Hope it helps.

Answer 2

Correct tense:

A lot of energy was wasted on finding the treasure.

Explanation:

• The word is verb in this sentence which defines the action of the subject.
• The verb is used in three tenses namely past, present and future.
• The verb "was wasted" defines the past form of is wasted. Since, the whole sentence defines the action took place in the past time.