1. 1. Please write it down __________________________________________(趁着没忘).
2. It has been a month ___________________________________________(我父亲戒烟).
3. Not until midnight ____________________________________________(街上噪音才停).
4. Hardly _________________________ ______ it started to rain.(比赛刚开始).
5. ______________(到……时候)he was 14, he _____________________（已自学）advanced mathematics.
6. I ______________(正要做) my homework ________(这时) the light went out.
