下列标点符号使用有错误的一项是（）（2 分）

I have been living in London for more than ten years, so I have ________ good knowledge of this city.

We all hope that our teacher is both strict _____us and friendly _______ us.[ ]

Hi, Samantha! When did you arrive in Leeds— Last week, I ___________ a different culture sincethen.

When did you go to bed last night— I didn’t go to bed _______my father got home.