– Do you know William failed the exam, Jenny? -- _____? As far as I know, he is always working hard.
Do you know if she is going __ him?
---Do you mind buying some fruit for me? --___. I’ll be happy to help you.
--Hello, is Mr. David in? ---_____.
They were still working in the fields __ it had got dark.
Are you ___ to make the best of time and catch up with your classmates?