Go down this street and turn / left / . You will see a library in front of you.A. lightB.

问题补充：

Go down this street and turn / left / . You will see a library in front of you.

A. light

B. left

C. let

D. lift

答案：

A. light

(答案→)B. left

C. let

D. lift

解析：句意:沿着这条街走，向左转，你会在你前面看到一个图书馆。light 轻的；灯；left 左边；let 让；lift 电梯。根据句意和音标可知，turn left是一个固定的短语，意思是向左转。故选B。