が急騰

skyrocketed

→ が
phrase Rare #41,109
skyrocketed Used after a subject, especially prices, values, or costs, to say that it rose very sharply. The full verb form is 急騰する.
JA: 最近、家賃が急騰している。
EN: Rent has skyrocketed recently.

価値が急騰した

The value of the yen skyrocketed.

財政不安の結果金の価格が急騰しています

As a result of fiscal uncertainty, the price of gold is soaring.