[ Grammar ]
People _____ know about the cultural rules.
A. have to
B. don’t have to
C. mustn’t
Select your answer:
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Grammar › ViewThe United States has launched many astronauts into space since 1969
A. Simple Present Tense
B. Present Progressive
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Each year, Americans _(throws/throw)_ away more than 1 million tons of Styrofoam.
A. throw
B. throws