adj.
VERBS
▪ be , prove
▪ become
▪ remain
▪ make sb/sth
▪
His knowledge of the area made him ~.
▪ find sth
▪
You will find their help absolutely ~.
ADVERB
▪ absolutely
PREPOSITION
▪ for
▪
This technology is ~ for students with poor sight.
▪ to
▪
Your support has been ~ to us.
Invaluable is used with these nouns: ↑ asset , ↑ assistance , ↑ contribution , ↑ experience , ↑ guide , ↑ help , ↑ information , ↑ insight , ↑ resource , ↑ service , ↑ source , ↑ tool