Stenka25 It would be better to put 'of', wouldn't it? No. The original text is correct.
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Stenka25It would be better to put 'of', wouldn't it?No.
Stenka25By slightly altering the configuration of chips on the motherboard of his laptop computer, Zach was able to turn it into a combination (of) death ray and time machine.I think "of" should be used there.
Stenka25 Doesn't 'OF' should be put in this sentence?Note that forms of do (doesn't) are not used with modal verbs (like should).