определить видоврменную форму сказуемого
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;
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