[ 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:
Second Conditional › ViewIf people lived on the moon, I ___ ____ there.
A. won’t live
B. will live
C. would live
D. don’t live
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