pick someone's brain
To seek information from someone knowledgeable; to ask questions of someone.
After I spent a couple of hours picking his brain, his scheme started to make sense.
VERB + PICK
have
He had his pick of three different jobs after graduation.
take
She walked into the ice cream shop and took her pick from all the colorful flavors available.
PHRASES
get/take first pick
She took first pick of the desserts at the buffet because she arrived early.
ADV
at random
The teacher picked a student at random to answer the difficult question.
out
The teacher picked out Sarah to read the poem aloud in front of the class.
PREP
as
The company picked him as their new manager last month.
for
My sister was picked for the school play last week.
PHRASES
freshly picked
The farmer's market had delicious freshly picked tomatoes that still smelled like the garden.
PHRASAL VERBS pick sth up
ADV
carefully, gingerly
She carefully picked the ripe strawberries from the garden this morning.
idly
While waiting for the doctor, she idly picked at the loose thread on her sweater.
VERB + PICK
try to | bend to, stoop to
PREP
by
She picked up her suitcase by the handle and walked toward the train platform.
from, off
He picked a ripe apple from the tree in his garden.