HSK 2
就
jiù副（介）
(after a suppositional clause) in that case; then; (after a clause of action) as soon as; immediately after; (same as 就是) merely; nothing else but; simply; just; precisely; exactly; only; as little as
你到家就给我打电话。
Nǐ dào jiā jiù gěi wǒ dǎ diànhuà.
Call me as soon as you get home.
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Appears across levels (2（7-9）) in the HSK 3.0 word list.