When shall I call on you?
I am certain he is at home.
I don't know who will attend this meeting.
3句汉翻英我什么时候来拜访你比较方便?(call on)我敢肯定他现在在家里.(certain)我不知道谁会参加这个会议
When shall I call on you?
I am certain he is at home.
I don't know who will attend this meeting.