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- What to the young tree yesterday?- Its leaves falled. [ ]A. happenB. happensC. happenedD. happenin

编辑:chaxungu时间:2026-04-23 21:56:43分类:小学英语题库

— What _____________to the young tree yesterday?
— Its leaves falled.[ ]A. happen
B. happens
C. happened
D. happeningC