Только правильно надо.
Put the verbs in brackets into the correct present tense.
A:When (the party/start)?
B: It (start) at 10 o’clock, so we (meet) at 9:30 at the bus station.
A: Mike (look) bad. (he/have) any troubles?
B: Yes, and he (think) of taking a holiday.
A:(you ever be) to a music festival?
B: Actually, I (go) to the concert this week.
A:You look exhausted. What (you do)?
B: I (do) my homework since morning.
A: Why (you look) so happy?
B: I (just find) 10 dollars in the street.
Complete the sentences using the verbs in brackets in Present Continuous or Present Perfect.
Sam (not finish) writing the poem yet. He (work) on the poem for six days.
Ben (look) for his pen, but he (not find) it yet.
Ann (write) a letter to her friend. She (not finish) it yet.
Maggy (wait) for Lilly in the hall. Lilly (not arrive) yet.
Alex (play) the guitar for three hours and he (still play).
Fill in the gaps with the verb in Present Perfect or Present Perfect Continuous and choose for or since.
1) They (learn) English (for/since) 5 years.
2) He (not be) to a cinema (for/since) last year.
3) Mike (know) Betty (for/since) two years.
4) I (not see) you (for/since) ages.
5) I (listen) to music (for/since) early this morning.
6) It (snow) (for/since) hours.

1)Building materials are divided into natural (natural) and artificial(Строительные материалы разделяют на природные (естественные) и искусственные)

2)Не смогу сказать.

3)metals are divided into two groups: ferrous and non-ferrous(металлы делятся на две группы: черные и цветные)

4)Ferrous metals are those that contain steel and iron.Non-ferrous metals do not contain steel or iron. This group of metals includes: aluminum and copper, Nickel and lead, zinc and tin, brass and gold, silver and platinum, as well as many others that do not contain iron.(Чёрными называются те металлы, которые содержат сталь и железо.Цветные металлы не содержат стали и железа. К данной группе металлов относятся: алюминий и медь, никель и свинец, цинк и олово, латунь и золото, серебро и платина, а так же многие другие, не содержащие железо.)

1) The properties of building and materials are classified into four groups: physical, mechanical, chemical, technological, etc.

2) Resistance to salt aggression and other chemicals (wood)

An important advantage of natural stone is strength, durability, resistance to environmental influences, frost resistance (stone)

Strength; reliability; versatility; combination with other materials (metal)

3) All metals are divided into two groups: ferrous and non-ferrous

4) Ferrous metals and alloys contain iron, non-ferrous metals do not. Ferrous metals are mild steel, carbon steel, stainless steel, cast iron and wrought iron. ... Since they do not contain iron, non-ferrous metals have a higher resistance to corrosion and rust.

Объяснение: just decided