1)а
2)Some
3)some
4) an, an, some
5)some
6)a
Natural resources and a labor force must be directed as efficiently as possible, because it represents an important part of economic system structure. In the economies of main English-speaking countries, managers of enterprises perform this function.
All free market economies run in a cycle.Now the economies of English-speaking countries stand at different stages of the cycle.
However, despite periodic recessions or depressions, they have continued to grow over time
Excuse me, could you tell me, how to get to subway?
1. Canteen
2. boys/girls changing rooms
3. Mike's / Cathy's classroom
4. Lockers
5. Science lab
6. Art classroom
7. Headmaster's room
8. Library
1) we all were surprised by the new
2)Are the exams being corrected by the teacher now?
3) A mysterious letter has been sent to John
4)Where was the book found?
5)We were driven to the airport by the taxi driver
6)An UFO has been seen by many people in this area
7)Have the plants been watered?
8)My purse was stolen while I was..
9)All the documents have already been sent to Mr Smith by the secretary.
10) michael has been offered an excellent job in a British company.
11)Bank robbers could be arrested by the police while they were crossing the border
12)This computer has been used without permission
13)A delicious cake is being baked by my grandmother
14)My hotel room was being cleaned by the maid when I came in.