26. William (already/hear) the news when I (call) to tell him.
27. Whhile Emma (do) her homework, her brother (play) music loudly, and she couldn't concentrate.
28. Nathan (come) across a photo of his great-grandfather as he (look) through some old things.
29. Helen (be) exhausted because she (jog) for two hours.
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26. William (had already/heard) the news when I (called) to tell him.27. While Emma (was doing) her homework, her brother (was playing) music loudly, and she couldn't concentrate.28. Nathan (came) across a photo of his great-grandfather as he (was looking) through some old things.
29. Helen (was) exhausted because she (had been jogging) for two hours.