用 I did 或 I was doing 完成下列句子。 How fast __________________ (you/drive) when the accident __________________ (happen)?
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用 I did 或 I was doing 完成下列句子。 Sam _______________ (take) a picture of me while I __________________ (not/looking).
用 I did 或 I was doing 完成下列句子。 I haven't seen Alan for ages. When I last __________ (see) him, he __________________ (try) to find a job.
用 I did 或 I was doing 完成下列句子。 When I was young, I _____________(want) to be a pilot.
用 I did 或 I was doing 完成下列句子。 Last night I ____________(drop) a plate when I ______________(do) the washing-up. Fortunately it didn’t break.