,并说明理由 The river used to ______ clean and there were many fishes ,but now it is heavily polluted and there is no fish any more A were B was C being D be

来源:学生作业帮助网 编辑:六六作业网 时间:2024/05/23 00:41:49
,并说明理由Theriverusedto______cleanandthereweremanyfishes,butnowitisheavilypollutedandthereisnofishanymo

,并说明理由 The river used to ______ clean and there were many fishes ,but now it is heavily polluted and there is no fish any more A were B was C being D be
,并说明理由
The river used to ______ clean and there were many fishes ,but now it is heavily polluted and there is no fish any more
A were B was C being D be

,并说明理由 The river used to ______ clean and there were many fishes ,but now it is heavily polluted and there is no fish any more A were B was C being D be
肯定是选 D.be
to的后面用原型呀.