[ 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:
Present Tenses › ViewWe _______________ in this hotel since Saturday.
A. have been staying
B. are staying
C. stay
D. have stayed
Conditional Sentence Type 2 › View
I’m not tired enough to go to bed yet. I wouldn’t sleep if I _____________ to bed now.
A. go
B. went
C. had gone
D. would go
Grammar › ViewThere 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
