I can’t run as as he can. fast , faster We must work carefully to avoid errors. more , less
She is working than usual. late, later
He played than his brother did. * bad , worse
You must speak quietly in the library. * more , less
He finished as as I did.  quick , quickly

can’t run as FAST as he can. fast , faster

We must work MORE carefully to avoid errors. more , less

She is working LATER than usual. late, later

He played WORSE than his brother did. * bad , worse

You must speak MORE quietly in the library. * more , less

He finished as QUICKLY as I did.  quick , quickly