Thank you, Mister Micawber.
I’ve got another question which comes from the textbook I’m using for teaching.
She nodded and shook her head at the right places. ___she understood what the philosopher was talking about.
There are several words to be chosen from: Certainly, Perhaps, Presumably, Surely, Undoubtedly. The correct answers that are give are Undoubtedly and Presumably.
But the students think that the other ones also fit here.
Since the sentence doesn’t have any context, I really don’t know how to explain it. And could you help me?