A. is B. are
A. Yes, it is. B. No, it isn't.
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⑴Is it Shanshan's ruler? A. 那不是你的蛋糕!
⑵Is this Amy's cat? B. 萨姆,小心点儿!
⑶That's not your cake! C. 这是艾米的猫吗?
⑷Is this your grandma's umbrella? D. 它是山山的尺子吗?
⑸Be careful, Sam! E. 这是你奶奶的伞吗?
house
headache
Yes, it isn't.
It's Fangfangs' ruler.