Body language

(a)   means of communication can transfer huge information

without saying any words.

You need to look through that (a)   before you answer the door.

A machine, usually in a wall outside a bank, shop, etc.

from which you can take money out of your bank account

using a special card. What is it?

(a)  

Even the most (a)   computers still have trouble analyzing sound fully.

Wireless routers can (a)   stable signals.

His research involved the study of instinctive (a)   in birds.

Fruit and vegetable colors are (a)  

of the types of nutrients they contain.

During poker, (a)   is the vital part of this game

and exists everywhere.

Another (a)   is that every stress-reducing strategy

works equally well for everyone.

To restore calm and balance

it is necessary to do something (a)   .