[ Modals and Responsibilities ]
They are ___ ensuring the safety of the students.
A. must
B. need to
C. have to
D. responsible for
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Punctuation and Grammar › View. Where should the comma go in this sentence? “Before eating Sara washed her hands.”
A. After “Before”
B. After “eating”
C. After “Sara”
D. No comma is needed
Grammar › View
Does she __________dolls?
A. have
B. has
C. do
D. none