The bike is ______ than the car.
A. bigger
B. biger
C. more big
D. the bigger
The boy is ______ than his brother.
A. happy
B. happier
C. more happy
D. the happy
The ring is ______ than the book.
A. more expensive
B. most expensive
C. the expensive
D. expensiver
客舱乘务员的工作场所是()
A. 酒店
B. 飞机客舱
C. 高铁
D. 动车