Dựa vào những từ cho sẵn, viết thành câu hoàn chỉnh. 1. We/ have/ breakfast/ when/ the mailman/ arrive. 2. While/ everyone/ sleep/ Paul/ watch/ TV. 3. I/ dream/ about/ long/ vacation/ when/ the alarm/ clock/ go/ off. 4. While/ I/ practice/ the piano/ late/ last night,i/ hear/ strange/ noise. 5. The sheep/ graze/ in/ the/ filed/ when/ they/ be/ scared/ by/ the/ noise.

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