一Oh,there’s someone knocking at the door. 一 must be that naughty boy.
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.
Mr. Chen is handsome and kind and he is one of _________ in our school.