After Billy broke the neighbor’s window, his parents made him ______ for it.

The English verbs let, make, have, get, and help are called causative verbs because they cause something else to happen.
a) LET = Permit Something To Happen.
Grammatical structure: LET + PERSON/THING + VERB (base form)
Examples: I don’t let my kids watch violent movies.
b) MAKE = Force Or Require Someone To Take An Action.
Grammatical structure: MAKE + PERSON + VERB (base form)
Examples: After Billy broke the neighbor’s window, his parents made him pay for it.
c) HAVE = Give Someone Else The Responsibility To Do Something.
Grammatical structure:
1) HAVE + PERSON + VERB (base form)
2) HAVE + THING + PAST PARTICIPLE OF VERB
Examples of grammatical structure #1:
I’ll have my assistant call you to reschedule the appointment.
Examples of grammatical structure #2:
My washing machine is broken; I need to have it repaired.
d) GET = Convince/Encourage Someone To Do Something.
Grammatical structure: GET + PERSON + TO + VERB
Examples: How can we get all the employees to arrive on time?
e) HELP = Assist Someone In Doing Something.
Grammatical structure:
1) HELP + PERSON + VERB (base form)
2) HELP + PERSON + TO + VERB
After “help,” you can use “to” or not – both ways are correct. In general, the form without “to” is more common:
He helped me carry the boxes.
He helped me to carry the boxes.