他们下周会来，虽然我不知道是哪一天。

They're coming next week, ___though I don't know which day.

我能阅读和理解法语，虽然我说得不太好。

I can read and understand French, ___though I don't speak it very well.

她同意帮忙，虽然她很忙。

She agreed to help, ___though she was very busy.