4.plete the fact file below with the past simple passive form of the verbs in brackets.

4.plete the fact file below with the past simple passive form of the verbs in brackets.

• The firstputer (1)__________________ (invent) by Charles Babbage in the early 19th century. It (2)__________________ (not power) by electricity – it was mechanical.
• The first electronic digitalputer (3)_________________ (build) in 1943 in Britain. It (4)__________________ (call) ‘Colossus’ and it (5)__________________ (use) for decoding enemy messages in the war.
• Businesses began to useputers in the 1950s, butputers (6)__________________ (not sell) in shops until the early 1970s.
• The first desktopputers (7)__________________ (develop) in the late 1970s.
• Internet access via a modem (8)_________________ (add) in the 1990s, but wireless access (9)__________________ (not add) to mostputers until about 2000.
• For the first time, in 2015, more tablets and smartphones (10)__________________ (sell) than laptops and desktops. Willputers eventually disappear from our homes and schools?