[ Vocabulary and Grammar ]
Scientists have made an important … about chimpanzees.
A. discovery
B. discord
C. disconnect
D. dislike

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Grammar › View….. is your favourite colour?
A. Who
B. What
C. When
D. Whose
Grammar › View
I ____ my room before Mum came home.
A. tidy
B. tidies
C. tidied
D. tidying
