[ Grammar ]
When you are on duty (đang trực), your uniform ……………..at all times
A. must be worn
B. must wear
C. must have worn
D. must have been worn

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Sentences vs Run-OnsTenses and Word FormationNouns FormationPronouns ( Interrogative )Passive Voice in Past and Present TensePassive Voice Present SimpleProgessive TensesConjunctions and CommasPresent Simple Affirmative and NegativeIN, ON & ATOther quiz:
Articles › ViewI really hate ____ scary movies.
A. the
B. a
C. an
D. none
Sentences and Non Sentences › View
Choose the appropriate description for the picture above.
A. My mother washes our clothes.
B. Aura sleeps well.
C. They are nice parents.
D. Leon fixes her bed.
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A. won’t live
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Grammar › View
He ______ about to give up his job when they offered him a rise.
A) was
B) is
C) has been
D) had been
