It took five years before they had steady jobs and could be able to send for me.

游客2024-12-29 11

问题 It took five years before they had steady jobs and could be able to send for me.

选项

答案 could be——were

解析 could／can不能与be able to搭配使用。可以和其搭配的情态动词有may，ought to，should。

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