[ Grammar ]
The number of inhabitants on the planet ____ arriving at unsustainable levels as it confronts deficiency of assets like water, fuel and food.
A. is
B. are
C. have been
D. had been

Random Topics:
Modals VerbGrammar, Literature, and VocabularyPreposition (at,in,on)Passive Voice - Past SimpleReported Speech and TensesFamily VocabularyPrepositionLinking VerbPresent Simple and Modal VerbsOrder of AdjectivesOther quiz:
Conditional Sentence 0, 1 › ViewIf I ______ chocolate ice cream from the restaurant, I will get extra toppings.
A. order
B. orders
C. ordering
D. ordered
Grammar › View
I was so scared …… when I looked down from the top of the cliff
A. tight
B. stiff
C. hard
D. solid
Tenses › ViewHe ……………… ill whenever he eats strawberries. He’s allergic to them.
A. fall
B. falls
C. is falling
D. fell
Articles and Prepositions › View
I’m very proud _____ my son. He won the first place.
A. of
B. for
C. at
D. in
