10. Dùng động từ trong ngoặc ở dạng dúng The world's first computer (1) ..........(build) at the University of Pennsylvania in 1946,although computer-like machines (2).........(build) in the 19th century.Computers(3)..........(sell)commercially for the first time in the 1950s, and progress (4)..........(make)since than.Computers are now much smaller and more powerful, and they can (5).........(buy)much more cheaply. Computers (6).........(use) in many fields - in business, science, medicine and education. They can (7).........(use) to forecast the weather or to control robots which make cars. The computer's memory is the where information (8).......... (keep) and calculations (9)..... (do). A computer can not think for place itself. It must (10) ..........(tell) exacly what to do.A lot of calculations can (11).........(do)very quickly on a computer Computer don't make mistakes. Stories (12) .........(hear) sometimes about computers paying people too much money or sending them bills for things they didn't by. These mistakes (13) .........(make)by the programmers. Some years ago, an American computer-controlled rocket went out of control and had(14)......... (destroy). The accident (15) .........(cause) by a small mistake in one line of the program,which cost the USA 18 million dollars. Criminals have found that "computer crimes" are a lot easier than robbing banks. Hundreds of millions of dollars (16)..........(steal)from bunesses every by people changing the information in computers. Large numbers of home computers (17).........(sell) recently. People know more about computers than they used to, and computers are playing a bigger part in our lives. Progress (18).......... .(make) all the time. Many people believe we can look forward to the day when even our household jobs like cleaning and decorating (19)........(do) by computer-controlled robots.
10. Dùng động từ trong ngoặc ở dạng dúng
The world's first computer (1) was built..........(build) at the University of Pennsylvania in 1946,although computer-like machines (2)...were built......(build) in the 19th century.Computers(3)...were sold.......(sell)commercially for the first time in the 1950s, and progress (4)....has been made......(make)since than.Computers are now much smaller and more powerful, and they can (5)..be bought.......(buy)much more cheaply. Computers (6).....have been used....(use) in many fields - in business, science, medicine and education. They can (7)...be used.....(use) to forecast the weather or to control robots which make cars. The computer's memory is the where information (8)..is kept........ (keep) and calculations (9)...are done.. (do). A computer can not think for place itself. It must (10) ....be told......(tell) exacly what to do.A lot of calculations can (11)..be done.......(do)very quickly on a computer Computer don't make mistakes. Stories (12) ....are heard.....(hear) sometimes about computers paying people too much money or sending them bills for things they didn't by. These mistakes (13) ..are made.......(make)by the programmers. Some years ago, an American computer-controlled rocket went out of control and had(14)..been destroyed...... (destroy). The accident (15) .....was caused....(cause) by a small mistake in one line of the program,which cost the USA 18 million dollars. Criminals have found that "computer crimes" are a lot easier than robbing banks. Hundreds of millions of dollars (16)..have been stolen........(steal)from bunesses every by people changing the information in computers. Large numbers of home computers (17).....have been sold....(sell) recently. People know more about computers than they used to, and computers are playing a bigger part in our lives. Progress (18)......is made.... .(make) all the time. Many people believe we can look forward to the day when even our household jobs like cleaning and decorating (19)....are done....(do) by computer-controlled robots.
(1) was built
(2) were built
(3) were sold
(4) has been made
(5) can be bought
(6) are used
(7) be used
(8) is kept
(9) are done