[ Grammar ]
Scientists ………. life on other planets yet.
A. didn’t discover
B. haven’t discovered
C. aren’t discovering
D. don’t discover

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Direct and Indirect SpeechCoordinating Conjunctions and Comparative AdjectivesAdjective SuffixesPassive Voice with Modal VerbsConditionals 1,2,3Asking and Giving OpinionGrammar - SimilesWish SentenceCausative VerbGerund - to InfinitiveOther quiz:
Grammar › View………………….. wear a uniform?
A. Do you have to
B. Can you
TAG Questions › View
She wasn’t busy yesterday, _______?
A. did she?
B. was she?
C. didn’t she?
D. wasn’t she?
Prepositions of Place › ViewYour glasses are right _______ you….
A. in front of
B. on top of
Grammar › View
Mariam couldn’t buy lunch _______ she had lost her bag.
A. because
B. so
C. or
D. although
