помогите пожалуйста
a) и b)​

Ответ:

Ex.5.

a)  

1) speaker / speech , buyer, destroyer / destruction,  creator / creation ,  

dumper / dumpiness, picnicker  

2) operator / operation, illustrator / illustration, radiator / radiation, cooperator / cooperation

3) calmness, illness, softness/ softener, readiness, darkness

b) He is a good public speaker.  

He opens the meeting with a brief speech.

We can find a buyer for your house.

Alcohol is a destroyer of families
.

They saved the building from destruction.

The room is in total darkness
.

Объяснение: