Swaroop,
Thank you for your answers. But I have had some problems.
First,I see a plural verb still follows none.
Ex:
None of these pens works / work.
But what I'm not sure is that none is used for 3 items, right ?:hmm:
Ex: We had 3cats once - none of them is / are alive now.
Second, in the second sentence, if D is also incorrect, should we choose A or D ? Or farmed family is a usage, too ?:hmm:
Thanks in advance!:)