问题补充:
改错how long have you (begun to study)english.改错how long have you (begun to study)english.i have (borrowed)this book for two weeks.the river has(become)very dirty since last august.our manager is away t
答案:
begun改成begin
时间:2021-04-05 14:14:11
改错how long have you (begun to study)english.改错how long have you (begun to study)english.i have (borrowed)this book for two weeks.the river has(become)very dirty since last august.our manager is away t
begun改成begin