read up on
verb
Infinitive
read up on
Present tense 3rd person singular
reads up on
Preterite
read up on
Present participle
reading up on
Past participle
read up on
verb
read up on
reads up on
read up on
reading up on
read up on
verb irregular vt
verb irregular vt vi
verb irregular vt vi
verb
verb
verb
verb
verb
verb
verb
verb
verb
verb irregular vt