It is necessary for you to have a computer password.
You

have a computer password.
It isn't necessary to stay in the exam hall after you have completed the test.
You

to stay in the exam hall after you have completed the test.
I advise you to seek help if you are having problems understanding something.
You

seek help if you are having problems understanding something.
Nia is a very well-behaved child. I doubt that she was nasty to the other children.
Nia is a very well-behaved child. She

nasty to the other children.
Richard has the ability to solve maths problems very quickly.
Richard

solve maths problems very quickly.
Students are obliged to be on time for class.
Students

on time for class.

why it is important to study foreign languages? whether it is difficult for you to learn english? what things help you to improve your communicative skills? your advice to those who begin to study english?

in our modern life english became the language of international communication.it's a language that used for communication between people with different first languages,knowledge of english has become a requirement in a number of fields. and? computers languages and programmes are connected with english. and a lot of information in the internet is also written in english.

nowadays english is widely used in tourism, trade, technology, so it's very useful to speak english. it's easy to communicate english everywhere.

to improve and widen my english vocabulary i listen a lot of songs in english, watch english-speaking tv programs, like bbc and sky, and, of course, a lot of american cartoons.  

for those who begin to study english i can recommend to do the same, watch tv programs and listen to the english-speaking programs.

mom, dad,  i quit  and come back  later,  because  i was going  to celebrate  the birthday of  a friend  in a cafe.  please  do not worry, i  will come  exactly  at 11 p.m.

the first us president known to all americans as "the father of the nation" was george washington.he was born in virginia into a planter's family.when he was 11 his father died.the family had a lot of land but not enough money to send george to school in england as rich families used to do at that time.george learned to ride a horse,to hunt,shoot,sail and swim.george washington began his career in the service of his county as a major in virginia militia and later became commander in chief of colonial army during revolutionary war.he was among those who wrote the us constitution in philadelphia.people respected him for his wisdom and honesty.after the war george wanted to retire and live at mount vernon where he had a beautiful house and a big platation.on april 30, 1789,before a large crowd washington promised to preserve,protect and defend the constitution of usa.this is how gw became the first president of the contry and served 2 terms.he refused a 3rd term and in 1797 he retired to mount vernon where he died 2 years later