His name is David Brown．His family name is ________．

Lingling is a　　　. She works in a hospital. 

 －How many _____ are there in the box？－Oh, there’re four.

—Why do you get up so early in the morning, Tracy？—I generally make it a          to be up by 7 to read English.

Xuanwu Lake is a ______ place in Nanjing City and visitors always enjoy the ______ of it.