astonished, amazed
Extension of the metaphor used in jaw-dropping.
with flying colors
Extremely well; in an exceptional, noteworthy, or extraordinary manner…
with an eye towards
With an intention, goal, or consideration to.
with young
Of a female animal, pregnant.
with a vengeance
With an intense motivation; in an extreme, intense, or violent manner.
with bated breath
Eagerly; with great anticipation.
with no further ado
Without any other formalities; with no further delay.