[ Vocabulary and Grammar ]
Wearing a mask while walking outside helps protect against _________.
A. road dust
B. underground system
C. congested road
D. itchy eyes
Select your answer:
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Passive of Modal Verbs › ViewThe house is tidy now. You _____________ clean it.
A. mustn’t
B. don’t have to
C. mayn’t
D. have to
Grammar › View
Which word is a proper noun?
Calli has horses.
A. Calli
B. has
C. horses