她打开手电筒，将一道光束投射过黑暗的走廊。

She turned on the torch, ___casting a beam of light across the dark corridor.

傍晚的太阳在田野上投下长长的影子。

The evening sun ___cast long shadows across the field.

高大的树木在草地上投下凉爽的树荫。

The tall trees ___cast a cool shade on the grass.