Files can become infected by viruses spreading ___ the network., over, in, at, on, You should refrain ___ using capital letters in online communication., of, off, from, away, The system loaded the programme ___ memory., in, at, to, into, Tech geeks often warn others ___ security loopholes., of, to, from, in, Many people browse websites ___ graphics turned off., with, by, on, from.

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