英语句子改错：I didn't know why you were so busy in the last there years.改ABCD中其一：A.why B.were C.so busy D.in the last three years

英语句子改错：I didn't know why you were so busy in the last there years.改ABCD中其一：A.why B.were C.so busy D.in the last three years
英语句子改错：I didn't know why you were so busy in the last there years.
改ABCD中其一：A.why B.were C.so busy D.in the last three years

英语句子改错：I didn't know why you were so busy in the last there years.改ABCD中其一：A.why B.were C.so busy D.in the last three years
B.改成had been.in the last three years在句子末尾表示在过去三天里,表示一个时间段里发生的事情,故要用延续性的语态来表示.一般过去时只是短暂性的语态.
一般的,in the last+时间,句子用一般现在时态,但此处是I didn't know,主句是过去时,相应的have改成had

last改成 past

i didn't know why you were so busy last three years.

有2种改法。
1）现在不知道你过去在干什么
I don't know why you were so busy in the last there years.
2）过去不知道你过去在干什么
I didn't know why you had been so busy in the last there years.

b.were 改为 are

were-are

in 好像不大合适
in一般用于将来时
用during吧

I didn't know why you were so busy last three years.
I didn't know why you were so busy during the last three years.