補(bǔ)全句子。
A: Are they from the U.S.A.?
B: No,they aren'tthey aren't. They are from China.
【考點(diǎn)】系動(dòng)詞引導(dǎo)的一般疑問(wèn)句.
【答案】they aren't
【解答】
【點(diǎn)評(píng)】
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發(fā)布:2025/4/6 1:30:5組卷:0引用:1難度:0.9