Have you _____ entered a composition? [ ]
A. ever
B. already
C. never
答案：A
决定运送速度的基本条件是( )。
A．车辆技术 B．技术速度C．营运速度 D．平均速度
Ed Smith doesn't play sports-he only _____ them on TV! [ ]
A. looks
B. looks at
C. sees
D. watches
