[ Grammar ]
Lemon juice doesn’t have negative impacts on the environment _____ we should use it for cleaning instead of hazardous chemical products.
A. because
B. although
C. so
D. but

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Grammar › ViewLucia has …………….. a new world record, with 5 consecutive Olympic gold medals in judo.
A. made
B. put
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D. set
Modal Verbs › View
They ___ bring their books to class every day. It’s mandatory.
A. must
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Vocabulary › ViewPeople ________ that English is an important language to learn.
A. acknowledge
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Sea ___ is a particular type of seaweed.
a. rack
b. wrack