孩子们在公园里把球高高地抛向空中。

The kids ___lobbed the ball high into the air at the park.

网球选手用一记漂亮的挑高球越过了对手。

The tennis player sent a perfect ___lob over the opponent's head.

疲惫的登山者们慢慢地在山路上挪动。

The tired hikers ___lumbered slowly along the mountain trail.