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The period when the great painted caves at Lascaux and [#permalink]
18 Nov 2003, 04:13
0% (00:00) correct
100% (00:52) wrong based on 3 sessions
The period when the great painted caves at Lascaux and Altamira were occupied by Upper Paleolithic people has been established by carbon-14 dating, but what is much more difficult to determine are the reason for their decoration, the use to which primitive people put the caves, and the meaning of the magnificently depicted animals.
A. has been established by carbon-14 dating, but what is much more difficult to determine are
B. has been established by carbon-14 dating, but what is much more difficult to determine is
Re: SC: The period when ... [#permalink]
28 May 2011, 23:10
i saw this used as an example on one of the very old Ron's Thursday session. And its mentioned as 'the reason for decoration.... depicted animals' is the list and should be treated as one piece.
instead if the sentence is like ... carbon-14 dating, but more difficult to determine... 'are' is required here. Because than one has to use a backward construction, so 'the reason for ...' are treated separately and 'are' will be required for these.