--Did you borrow the book from the library ? ---Yes. I _______ it for three days. I’ll return it this afternoon.
I don’t know _________ the problem.
Hainan is a very good island. It’s the second ________ island in China.
The accident happened ________ a cold winter morning.
— ________ fine weather it is today! — Let’s go for a picnic.
—My father has decided to _________ smoking. —That’s good news for us.