Humans rely on _____ species of plants and animals for food than they once ______.
A. less, done
B. fewer, done
C. less, did
D. fewer, did

Random Topics:
Giving and Asking for AbilityTenses - Present and PastGrammar and VocabulariesPast simple vs Present perfectGrammar: is/are/was/wereConditional SentencesConditionals and WishesPoetryWord FormationSimple PastOther quiz:
Grammar › ViewWhat is the complete subject in the sentence?
My mischievous sister has a trick up her sleeve.
A. mischievous sister
B. has a trick up her sleeve
C. My mischievous sister
D. sister
Tenses › View
What does the present perfect tense indicate?
A. An action that will occur in the future
B. An action that is completed at the time of speaking
C. An action that began in the past and is finished at the present
D. An action that continues indefinitely
Grammar › ViewI read an encyclopedia, it says that snakes _____ on the ground, in trees and in water.
A. Living
B. Live
C. Lives
D. Lived
Grammar › View
Rita usually ________ home at six p.m. every day.
(A)arrive
(B)arrived
(C)arrives
(D)will arrive
