Raxit85
Hi,
I agree that verb is required for subject after comma,but
Can anyone tell me the significance of tense indicating word in the sentence, "last year"? I've also eliminated D because of tense error.
Posted from my mobile deviceYou may be confusing two scenarios. If "last year" is modifying the main verb of the sentence, sure, that verb will be require the past tense. "Last year, Tim
ran headfirst into a llama and learned the hard way that inter-species rugby is a terrible idea." In this case, the main action, "ran," happened last year, and so the past tense is appropriate.
However, if "last year" is modifying something other than the main verb, then there's no reason to assume that the main action had to have occurred in the past. "Having suffered a llama-induced concussion in the last year, Tim
is no longer keen on interspecies rugby." Now, "in the last year" is describing the time period when Tim suffered the concussion, rather than the main verb, "is." It's perfectly fine to use another time period to provide context for something that's true now.
(D) is more like the second construction above. Take another look: "With the cost of wireless service plummeting in the last year, and mobile phones becoming increasingly common, many people
are..." "In the last year" is describing when the cost of wireless service was plummeting. Because the main action, "are" isn't modified by "last year," it's perfectly fine for that action to be present tense.
I hope that helps!