Joan, you are late again!—Sorry, I _______next time.

BBC是“_____________”的缩写。

Kate, it is time lunch.— I’m coming, Mum.

My brother is a knowledgeable person in his office.— books you read， knowledge you’ll gain.

What’s wrong with your uncle— We’re sure _______ something is wrong with him, but we doubt _______ the disease can kill him.