pick up after somebody

How often had it gone to pick up our son after school?

The cause was picked up again in 1949, after the war.

She told him to pick her up on the edge of town, after the party.

The total numbers of teachers fell in the early 1980s and only began to pick up after 1983.

The second series picks up several weeks after the last.

Picking up after people was not part of her job.

All I can figure out is from picking up after them.

The game picks up 30 years after the first two games of the series.

The boat didn't come back to pick me up until way after dark.

The issue went on hold over Christmas but was picked up again after the first of the year.