Anna()read when she was four1can2is able to3could4were able to请选择答案及为什么谢谢

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Anna()read when she was four1can2is able to3could4were able to请选择答案及为什么谢谢

Anna()read when she was four1can2is able to3could4were able to请选择答案及为什么谢谢
Anna()read when she was four1can2is able to3could4were able to请选择答案及为什么谢谢

Anna()read when she was four1can2is able to3could4were able to请选择答案及为什么谢谢
3 could
1是现在时,与后面从句不符合
2.同上
4.were不对,如果是was就可以

could
can,is able to 为现在时态,与后面从句的时态不一致。
were able to 中的were与主语不一致。
祝你进步!