Identify and correct errors involving subject-verb agreement
The experimental site, islands off Noumea in New Caledonia, (is remote from any human activity/are remote from any human activity/remote from any human activity/both are remote from any human activity).
Contrary to the results of the experiment (fresh water prove to be intensively concentrated/fresh water proves to be intensively concentrated/fresh waters are intensively concentrated/prove fresh water is to be intensively concentrated) in the middle of the island rather than on its edges(that is the usual zones/which are the usual zones/it are the usual zones/there are the usual zones) of sea water-freshwater interaction.
Complementary (analyses/analysis) derived from dialect study findings (have revealed/is revealed/are revealed)the importance of on-site research.
The density of the vowel changes and the greater degree of consonant development
(is maximal in London suburbs area/are maximal in London suburbs area/it is maximal in London suburbs area/they are maximal in London suburbs area).
On the area margins(the phenomenon is observed/are observed the phenomenon/there are the phenomenon/it is the phenomenon), with mixture of phonetic variables.
A number of special conditions (is/are) necessary for the phonetic change sources to form.
There (is/are) two types of urban dialects in England.
Two years (is/are) a long time when you have to wait.
The number of trees in the National Park is not great.
Each of the students (is/are) to submit their papers.
No news (is/are) good news.
The President along with his advisers (is/are) expected to arrive in an hour.