[ Vocabulary ]
Refine an ore
A. Cobalt
B. Smelt
C. Mutate
D. Metamorphosis

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Future - will / going to / present continuousGrammar (Possessive Pronouns)Verb + InfinitiveVerbs with Prepositions and ConjunctionsPast Perfect or Past Perfect ContinuousModal AuxiliariesModals and Past TensesReported SpeechIntensifiers: Really vs VeryGrammar and EssayOther quiz:
If/Unless - Conditional type 1 › ViewI will take a day off ___ my boss says that it is okay.
A. unless
B. if
Grammar › View
Find the word with a stress pattern different from the others
A. smartphone
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A. can
B. mustn’t
C. have to
D. can’t
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Articles & Quantifiers › View
___________ people were waiting for the interview outside.
A. An amount of
B. A great deal of
C. A little
D. A number of
