My sister still wanted to go to school bue she was

My sister still wanted to go to school bue she was
My sister still wanted to go to school bue she was

My sister still wanted to go to school bue she was
我妹妹（姐姐）想去上学,但她生病了.

我姐姐仍然想去上学， 但是她病了。

虽然我妹妹病了但仍然想去上学。

我妹妹（姐姐）想去上学，但她生病了。
绝对正确
老师讲了。。。。
句中不是bue是but