Answer:
They were effusive in their praise of the new movie.
I got tired of his perpetual complaining.
It´s a trifling thing, so i didn´t bother with it
I let the car idle as i waited outside this building
Step-by-step explanation:
effusive refers to an action that shows intense emotion towards something, as in this case, to the opinion about a movie.
Perpetual is something that never ends. it makes sense within this sentence since it is a continuing complaint
in this case trifling refers to something that has no importance or transcendence
Idle in this case applies to deactivated or it does not consume energy