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Jackwasinlowspiritsthosedaysandhisfriendsdidalltheycould______himup.A.cheerB.cheering...
Jack was in low spirits those days and his friends did all they could ______him up.
A.cheer B.cheering C.cheered D.to cheer
不是前面有个could 吗??不就应该要用动词原形吗??为什么是选D??
求解释~!谢谢~~ 展开
A.cheer B.cheering C.cheered D.to cheer
不是前面有个could 吗??不就应该要用动词原形吗??为什么是选D??
求解释~!谢谢~~ 展开
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