[ Vocabulary and Grammar ]
The world is becoming more industrialized and the number of animal species that have become extinct ________ increased.
A. have
B. has
C. are
D. is
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Coordinating & Subordinating ConjunctionsWho am I?Grammar - Countable/ UncountableVocab and GrammarPerfect and Past TensesActive & Passive VoiceAction, Helping & Linking VerbsTenses & AffixesGrammar and Sentence StructureFigure of SpeechOther quiz:
Modal Auxiliaries › ViewI have lived in England for two years, so I ___________ speak English fluently
A. Will
B. May
C. Shall
D. Can
Future Tenses › View
Create a sentence in the future continuous tense.
A. I will be watching a movie tonight.
B. I will watch a movie tonight.
C. I watched a movie tonight.
D. I have watched a movie tonight.
Grammar › ViewA monkey _______ a long tail
A. has
B. had
C. have
D. having
Grammar › View
By the time he retired, he ________ for this company for more than twenty years.
A. is working
B. has been working
C. was working
D. had been working