[ Grammar ]
Scientists finally …….. find a cure for the disease after years of research.
A. managed to
B. can
C. could
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Grammar › View(Rearrange) flowers nice smell these
A. These flowers smell nice.
B. Smell of these flowers is nice.
Simple Present › View
My mother __________ the house on Sunday.
A. doesn’t clean
B. not cleans
C. don’t clean
D. doesn’t cleans