Grammar fix
crack on
get on with a task
to start doing something, or keep doing it, without wasting time
phrasal verbB1common
Hear it in context
Notice where the phrase sounds natural.
Right, I'd better crack on, I've got loads to do before lunch.
We had a quick coffee and then just cracked on with the painting.
Fix the pattern
One small grammar move makes it sound right.
Don't confuse with 'crack up' (start laughing); 'crack on' is about pressing ahead with a task.