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1994songthanh
2 năm trước
1. ab(a-b)(c+1)+bc(b-c)(a+1)+ca(c-a)(b+1)
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13) ------- is Kate going? –Home. ------- is she going home? –She’ll give flowers to her mom. 14) ------- is Karen planting trees? –She likes them. ------- many trees has she planted so far? -Fifteen. 15) ------- are the kids going? –To their bedrooms. ------- do they go to bed? – At nine. 16) ------- does Jane work? -A café. ------- is she doing? – Serving. 17) ------- is John? –At the canteen. ------- is he there? –Having lunch. 18) ------- is Arthur doing? –A sandcastle. ------- does it look like? –Gorgeous. 19) ------- are Bessie and Anthony? - In Westland. ------- are they there? –Having fun at the camp. 20) ------- is Sally doing? –Knitting. ------- is she knitting? –A scarf. 21) ------- is your little brother? – In the garden. ------- is he doing there? –Skipping rope. 22) ------- often does Amber swim? –Every day in summers. ------- does she swim so much? –She loves swimming. 23) ------- is Ashley doing? –She is cutting the papers. ------- is she cutting them? –To have fun. 24) ------- is Alfred out? –He is swinging. ------- will he come back? -In an hour

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