Ответы
We have created more than twenty new software products for the last few years.
Have we created more than twenty new software products for the last few years?
How many new software products have they created for the last few years?
Have we created more than twenty new software products or smartphones for the last few years?
We have created more than twenty new software products for the last few years, haven't we?
Who have created more than twenty new software products for the last few years?
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They had installed a new anti-virus program by lunchtime.
Had they installed a new anti-virus program by lunchtime?
What had they installed by lunchtime?
Had they installed a new anti-virus program or a new game by lunchtime?
They had installed a new anti-virus program by lunchtime, hadn't they?
Who had installed a new anti-virus program by lunchtime?
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