一、用 when 或 while 填空
1. —What were you doing the typhoon warning came?
—I was packing emergency supplies.
2. —We were cleaning up the street our neighbors were preparing hot meals for rescuers.
—Everyone was doing their part!
3. —Did you see the news the typhoon landed?
—Yes, I was watching the live broadcast.
4. —Some areas are still recovering others have returned to normal.
—The rescue work was really efficient.
5. —I was taking a walk suddenly the wind picked up.
—You must have hurried home!

一、1. when 2. while/when 3. when 4. while 5. when