Is this a teacher’s desk?肯定回答应说： A.No, it isn’t B.Yes, it’s C.Yes, it is
These ducksvery naughty! A. isB .areC was
Let’sthe flowers. A. to waterB. waterC. watering
Whathis? A.isB wasC are
---are those? --- They’re boats. A.WhatB.WhereC.How
Those are. A.treeB. flowerC. flowers
very naughty!
the flowers.
his?
are those?
.
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