Any substance that cannot be decomposed into simpler substances by ordinary chemical processes
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Participle & Appositive Idioms Future Perfect Continuous TenseModals, Phrasal Verbs, Gerunds and InfinitivesContinuous and Perfect TensesPositive and Negative ConnotationsPresent TensesModals of ObligationA(n), the, no article
Other quiz:Past Tense › View
While I …… the homework, my sister …… the dishes.
A. did – washed
B. was doing – washed
C. was doing – was washing
D. did – was washing
Grammar › View
I finished my essay yesterday but …….. it in to the tutor yet.
A. I’ve given
B. I haven’t given
C. I didn’t give
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