[ Grammar ]
School students ________ wear uniform to school.
A. should
B. must
C. need to
D. must not
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Present Perfect Tense › ViewMary hasn’t finished her homework ____________________.
A. Already
B. Yet
C. Ever
D. Never
Grammar › View
Gaudalupe Peak is the (high) mountain in Texas.
A. high
B. higher
C. highest
Grammar › ViewWhich modal expresses moral duty?
A. Ought to
B. Should
Grammar › View
What are ______ surnames?
A. they
B. their
C. theirs