Question

Помогите с заданием необходимо выбрать правильную видов ременную форму сказуемого.
Заранее спасибо
1. The abacus … about 5,000 years ago.
a) has emerged; b) emerged; c) had emerged; d) emerges;
2. The first all-electronic computer … by 1940.
a) developed; b) was developing; c) was developed; d) had been developed;
3. In 1694 Pascal’s invention … .
a) was improved; b) improved; c) was improving; d) had improved;
4. The transistor … the large vacuum tube in televisions, radios and computers.
a) replaced; b) replaces; c) was replaced; d) was replacing;
5. Scientists … to fit even more components on a single chip very soon.
a) will have managed; b) manage; c) will manage; d) ;
6. In 1830 Babbage … to build a general-purpose machine.
a) proposes; b) proposed; c) has proposed; d) had proposed;
7. By the early part of the 20th century electromechanical machines … .
a) had been developed; b) developed; c) had developed; d) were developed;
8. Data … a day before yesterday.
a) were being processed; b) are processed; c) processed; d) were processed;
9. We … the term “processing” meaning “data processing”.
a) had used; b) are used; c) use; d) were used;
10. Processing … operation on data to convert them into useful information.
a) called; b) is called; c) calls; d) has called;
11. The tested method … to correct further errors.
a) will be employed; b) will employ; c) will have employed; d) will be employing;
12. This technique … now to develop a new computer program.
a) is applied; b) is being applied; c) applies; d) has applied;
13. Many computer programs … recently.
a) have created; b) had created; c) have been created; d) are created;
14. Next seminar our group … the history of computer development.
a) will be discussing; b) will have discussed; c) will be discussed; d) will discuss;
15. By 1951 the Census Bureau … the first UNIVAC computer.
a) was installed; b) had installed; c) has installed; d) installed.

Answer 1

1. The abacus … about 5,000 years ago. b) emerged

2. The first all-electronic computer … by 1940. d) had been developed;

3. In 1694 Pascal’s invention … . a) was improved

4. The transistor … the large vacuum tube in televisions, radios and computers. a) replaced

5. Scientists … to fit even more components on a single chip very soon.

c) will manage

6. In 1830 Babbage … to build a general-purpose machine. b) proposed

7. By the early part of the 20th century electromechanical machines … .

a) had been developed

8. Data … a day before yesterday. d) were processed;

9. We … the term “processing” meaning “data processing”. c) use

10. Processing … operation on data to convert them into useful information.

b) is called

11. The tested method … to correct further errors. a) will be employed

12. This technique … now to develop a new computer program. b) is being applied

13. Many computer programs … recently. c) have been created

14. Next seminar our group … the history of computer development.

a) will be discussing

15. By 1951 the Census Bureau … the first UNIVAC computer. b) had installed