用所给单词的适当形式填空。使句意完整、正确。1. There are ten ____________ (box) in the classroom. 2. Children's Day is on the ____________ (one) of June.3.-六年级英语

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双写词尾+ed

stop
plan

stopped
planned 

不规则变化的动词过去式:
have---had are---were get---got say---said feel---felt do/does---did is---was go---went   drink--drank eat--ate bring----brought think----thought
buy----bought catch---- caught teach ---- taught sit----sat wear----wore cut----cut sweep----swept sleep——slept become----became