В треугольнике ABC МN || AC. а) Докажите AB*BN=CB*BM. б) Найдите MN, если AM=6см,ВМ=8см,АС=21см

IMake up 5 questions:

Many interesting games are always played at our P.T. lessons.

Make the sentences Passive:

a)     Agatha Cristie wrote 68 novels.

b)    The explorers gave the newspaper reporters along interview.

c)  Our mother tells us stories every evening.

d)    Her daughters gave her three beautiful dishes as a birthday present.

e)      They water the flowers regularly.                            ________/5

Paraphrase the sentences using the Present or the Past Indefinite Passive:

1. People drink only freshwater.

какое соответстивие "горная порода-её тип"является верным. известняк-осадочная,уголь-магматическая,гранит-метоморфическая,мрамор-магматическая.