[ Tenses ]
If nothing is done one million species that are alive today ………………………………… (become) extinct in twenty years.
A. will become
B. are going to become
C. will have become
D. will be becoming
Select your answer:

Random Topics:
Sports VocabularyDescriptionsConjunctions, Prepositions and InterjectionsNoun FormationModal Verbs and ConjuctionsFrequency AdverbsPresent Simple & Present Continuous TensesCompound SentencesCollocations & TensesSpeech TensesOther quiz:
Vocabulary & Phrasal Verb › ViewThe book … last year has become an international bestseller.
A. publishing
B. published
Grammar › View
______ email address is sky321@bestmail.com.
A. I
B. You
C. My
