1.of course
2.with us
3. with great pleasure
4.i'm sorry, I don't know
1. What time did Peter get up yesterday?
2. Who did he wanted to become?
3. How long did he swim yesterday?
4. What did farmers use to cross the river?
5. What did you do last Saturday?
6. When did French burn Moscow?
7. What was there in the centre 10 years ago?
8. What did scientists discover in the 20th century?
9. When did teenagers listen to The Beatles?
10. Who landed on the Moon in 1969?
Названия стран употребляются без артикля, за исключением:
the Netherlands(т.к. множественное число)
the UK
the Ukraine
the Senegal
the Vatican
также со странами в название которых входят слова:
republic
union
states
kingdom
emerates
также The ARGENTINE, но ARGENTINA(!)
Congo и Sudan можно и с артиклем The и без.
The user is aware of the effects of different applications programs (1) but operating systems are invisible to most users. They lie between applications programs, (2) such as word processing, and the hardware. The supervisor program is the most important. It remains in memory, (3) therefore it is referred tо as resident. Others are called non-resident (4) because they are loaded into memory only when needed. Operating systems manage the computer's resources, (5) such as the central processing unit. (6) In addition, they establish a user interface, and execute and provide services for applications software (7) although input and output operations are invoked by applications programs, they are carried out by the operating system.
