fill in the blanks

a)The careless boy-------a cup an hour ago(broke)

broke

shattered :)

demolished
smashed
destroyed
.....

To fill in the blanks, we need to use the past tense of the verb "break" to match the tense of the sentence. The past tense of "break" is "broke." Therefore, the correct sentence would be:

a) The careless boy broke a cup an hour ago.