Use the Passive Voice: We shall finish the work in two days.

1) мы знаем, что он работает над проблемами в области космической связи.(его работа связана с проблемами).

2) если вы сделаете даже малейшую ошибку в компьютерном языке, разговор ломается и вы должны идти в начало.( наверное, имеется ввиду, ошибка в алгоритме, программа рушится и надо начинать сначала? )

3) читальный зал библиотеки конгресса - это огромная коллекция справочников.

канада является второй по величине страной в мире и самым большим на северо- американском континенте.

i like wearing different kinds of clothes, but certainly clothes should suit the occasion. when i plan what i’m going to wear i usually think what kind of meeting i have. at school we weren’t allowed to wear sport or bright clothes, we had to wear clothes of formal style. usually i wore a jacket, a blouse and trousers or a skirt. but i didn’t like being dressed that way, as many other students. really i prefer smart clothes to formal. besides i enjoy wearing sport clothes, because i feel comfortable in it. also on my list of likes there are jeans. one of my favourite colours is white, so i like white sweaters, tops and skirts. i usually wear high heeled shoes even if it’s not always comfortable or thick-soled boots. when i go out i always dress up, because i feel better that way. but when i have an official meeting i try to wear formal clothes.

this is a fox*s family. it  consists of 7 aminals: mother - fox. father - fox and 5 little foxes. they are all fur and red. they live in a big cosy  hole in a dark part of the forest. little foxes like to run and jump here.