[ Science ]
Scientists have found only 2 substances in the whole universe. What are they?
A. Matter and Air
B. Oxygen and Mass
C. Matter and Energy

Random Topics:
Conjunctions and Verb TensesModal "Have to"Prefixes SuffixesHomophonesGrammar - Present Perfect with already, just, yetModals of ProhibitionSimple Future - PassivePronouns and AntecedentsModals for ObligationPresent and Past TenseOther quiz:
Grammar › ViewI can’t drink this coffee. It’s too hot.
A. this coffee is too hot to drink
B. this coffee is enough hot to drink
C. this coffee is so hot
Grammar › View
If your tooth hurts, you __________ go to the dentist’s.
A. musn’t
B. should
C. cant
D. might
Carla feels ______when she’s relaxing in the garden with a good book.
A. happier
B. more happy
Grammar › View
When we ………….. (see) Ati and Wia, they …………… (play) tennis.
A. were seeing, were playing
B. saw, were playing
C. were seeing, played
D. see, play