Apply the course version boundaries in notes.md; HSK tasks are transferable language practice, not a claimed HSK 3.0 mock.
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a2_key:mixed-revision:1
Read the original notice: “Library: return books by Friday. Saturday returns incur a fee.” Explain what a reader should do to avoid the fee.
Answer and reasoning
Return books by Friday; Saturday is too late for a fee-free return.
a2_key:mixed-revision:2
Write at least 25 words to a friend: suggest a picnic, give the day and say what food you will bring.
Answer and reasoning
Human review checks all three content points, intelligible connected writing and at least 25 words. Many valid answers exist.
a2_key:mixed-revision:3
In a supervised pair task, ask about a partner’s favourite weekend activity, listen to the answer and give one reason for your own preference.
Answer and reasoning
Teacher observes turn taking, relevant follow-up, intelligibility and language. A written script or self-marked quiz cannot replace the live performance.