[ Geography ]
Which of the following is the most abundant element on the earth’s crust?
A. Iron
B. Oxygen
C. Silicon
D. Nitrogen

Random Topics:
Gerund after Prepositions and Certain Verbswill, be going to, would like toObject PronounsAdjectives & PrepositionsGrammar & VocabModals of AdviceTenses & PassivePunctuationsModals of ProhibitionSentence StructureOther quiz:
Grammar › ViewThe countryside offers _____ landscapes and fresh air.
A. dirty
B. scenic
C. crowded
D. noisy
Grammar › View
The bird is _______ the dog.
A. on
B. in
C. under
D. above
There is nothing you can do about the situation, so it’s no use _____________ about it.
A. to worry
B. worrying
C. worry
D. to worrying
Vocabulary › View
What is the definition of ‘condemnation’?
A. punishment, strong disapproval
B. forgiveness
C. praise
D. reward