A.Lane ①. | B.Lane ②. | C.Lane ③. | D.Lane ④. |
A.Place left hand out of the window pointing upward. |
B.Put left hand out of the window pointing downward. |
C.Reach left arm out of the window pointing to the left. |
D.Place left hand out of the window pointing backward. |
A.Use horns sometimes to warn passers-by of danger. |
B.Drive on before the stop sign on a school bus is removed. |
C.Use hand signals instead of indicators to show which direction you are going. |
D.Do not use warning signals in the school bus until all the pupils get on the bus. |
A.Passers-by. | B.Pupils. |
C.Policemen. | D.Drivers. |