I.
noun
VERB + SURROGATE
▪ act as , be , become
▪ use
SURROGATE + NOUN
▪ father , mother , parent
▪ child
PREPOSITION
▪ ~ for
▪
He used the Internet as a ~ for contact with real people.
II.
adj.
Surrogate is used with these nouns: ↑ father , ↑ mother , ↑ mum , ↑ parent