Question

rules of present continuous tense​

Answer 1

Tropical grasslands, or savannas, are also the homes of primates in Africa and Asia; no savanna-living primates exist in South America. Tropical grasslands comprise a mixture of trees and grasses, the proportion of trees to grass varying directly with the rainfallTropical grasslands, or savannas, are also the homes of primates in Africa and Asia; no savanna-living primates exist in South America. Tropical grasslands comprise a mixture of trees and grasses, the proportion of trees to grass varying directly with the rainfall

Answer 2

Basic rule Just add -ing to the base verb:

see - seeing

be -being

Exception

If the base verb ends in consonant + stressed vowel + consonant, double the last letter: s t o p consonant stressed vowel consonant

vowels = a, e, i, o, u

stop. - stopping