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Which is the correct alternative to complete the paragraph...
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Which is the correct alternative to complete the paragraph below?
Many ofthe same questions that _______ about coal-powered propulsion _________ of the Internet ofThings (IoT) today: What's wrong with the traditional way; how will this benefit my fleet; why do we need to make this change? They_____________ all good questions, and they __________ a very natural human interest in the three areas that should matter most in deciding whether to use any maritime technology: safety, effectiveness and cost. The biggest challenges to IoT adoption _____________ . ln large part, this is due to the ready availability of high-performance data collection.
(Adapted from: Sea Technology, December2018).
A
have been asked / could be asked / were / show / have already overcome
B
will be asked / are asked / were / are being shown / already overcame
C
had been asked / were asked / might be / showed / had already been overcome
D
could be asked / were asked / will be / will show / have already overcome
E
were asked / are being asked / are / show / have already been overcome