[ Present Tense ]
Languages _____ very fast. Half of world’s languages will disappear by 2100.
A. disappear
B. are disappearing
C. have disappeared
D. have been disappearing

Random Topics:
1st & 2nd ConditionalsAuxiliaries VerbPrepositions and AdverbsModal Verbs and ConjuctionsVerbs and Possessive AdjectiveGrammar - SimilesPast Continuous TenseGrammar - either...or, neither...norPronounsVocab and GrammarOther quiz:
Prepositions › ViewWill we be ___ time, or will we miss our flight?
A. at
B. in
C. on
Subject-Verb Agreement › View
There (is, are) however, numerous elements that are man-made as well.
A. Is
B. Are
When the sentence comes to an end, we ____.
A. put comma
B. put full stop
C. do not put anything
Vocabulary › View
He placed security cameras in the hope of …….. shoplifters.
A. rejecting
B. postponing
C. deterring
D. removing