.Yesterday,Ben and Kitty ---------- (be) at home.They ------

学习时间:2026-08-23 05:33:23 阅读：9212

.Yesterday,Ben and Kitty __________ (be) at home.They __________ (sing) a lot of songs.I heard them _____________ (sing) loudly.

无情的人生

2026-08-23 05:33:23

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were sangsinging不明白的再问哟,请及时采纳,多谢! 再问：为什么不是were singing？再答： hear sb doing 听到某人正在干某事~