The twins ____ a little Chinese from then on .A.could speak B.have been able to speak 选哪一个?

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The twins ____ a little Chinese from then on .A.could speak B.have been able to speak 选哪一个?

The twins ____ a little Chinese from then on .A.could speak B.have been able to speak 选哪一个?
The twins ____ a little Chinese from then on .A.could speak B.have been able to speak 选哪一个?

The twins ____ a little Chinese from then on .A.could speak B.have been able to speak 选哪一个?
B

B 过去完成时

B from then on 用完成时 A 很高兴为您 A 双胞胎从那时起可以说一些中文 希望我的回答对您有帮助,祝您学习进步,工作顺心。^_^ ..