If the weather had been better, we could have had a picnic. But it ____ all day.
—Must I return the book tomorrow?—No, you ________.You can keep it for three days.
The Olympic Games is held ________.
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.