[ Vocabulary ]
Exacerbate
A. Complicate; make worse
B. Deflate; let down
C. Eat

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Prepositions of Time › ViewApply the correct preposition of time in this sentence: The store is open ___ 9 AM to 5 PM.
A. at
B. between
C. from
D. on
Grammar › View
Jacky or his cousins __________ to deliver the newspapers every day.
A. has helped
B. is helping
C. helps
D. help