#3
1. My father goes to work every day
2. My mother teaches Russian
3. At my school, they do Mandarin
4. My friend and I watch TV every day
5. I try to learn ten new words every day
6. The English teacher writes difficult wonds on the board
7. I like Maths
8. My friends play computer games
A nice girl
a black pen
a white bird
a dirty shirt
Вообще во всех двух случаях должно стоять has, т.к сказуемое относится к girl (girl=she-has)
DmitRi Mendeleev is a great Russian scientist of the 19th century.He is recognized as a great chemist who created the periodic classification of the elements.Dmitri Mendeleev was born in Tobolsk in 1834. At school,Dmiti succeed in mathematics,physics,and geography but was not good at languages.In 1855 he graduated from Pedagogical institute in St Peterburg with a gold medal for his achievements .In 1856,he received a degree in chemistry.Dmitri Mendeleev's contribution to the world's science was enormous. He was the first created the dependence of the qualities of the elements on their atomic weight.He forecast that the gaps in the table of elements would be filled in by elements whith had not been discovered yet.Dmitri Mendeleev was greatly honoured as a member of academies in many countries.Elements No 101 was named after him.