It took a few seconds for her eyes to ________ to the darkness.
D
A分配，拨出B收养，过C应用，申请D调整，使适合
If you try to learn too many things at a time, you may get ________.
Generally, a dictionary covers the following contents EXCEPT ______.
Which of the following is NOT one of the characteristics of idioms?
Police are ________ the disappearance of two children.