How can you complete these dialogues?

1) A; Will you stay with us for the weekend?

B ...

A; Oh, I m sorry. I hope your mum will be better soon

2) A; Did Columbus discover America in 1492 or 1592?

B; In 1492, I think, but ...

A; Let s find out

1) B. I would love to, but my mum became unwell, so I have to stay by her side until she gets better.

2) B. In 1492, I think, but there are some people who claim that Columbus reached America in 1592.

По третьему образцу Вы дали не полный пример