I know she is very ______ . Look! The smile(微笑) is on her face.
The number of giant panda is because people always hunt them.
I had to buy ________ these books because I didn't know which one was the best.
Don't make____________same mistake for the second time in____________day.
--- _______________________? --- I’m fine, thanks.
--- What class are you in? --- I’m in ________________, Miss Li’s class.