[ Tenses ]
While Ms. Nhung was teaching in Class 4B, she ______ a piercing scream outside.
A. had heard
B. has heard
C. was hearing
D. heard

Random Topics:
Conditionals / Unreal PastArticles and DeterminersModal Verbs and ConditionalsGrammar- Later/LatterPassive VoicesPast Simple (to be)Action, Helping & Linking VerbsArticles and QuantifiersVerb & GrammarPast Simple or Past ContinuousOther quiz:
Grammar › ViewThe car won’t start. It ______ be out of fuel.
A. must
B. can’t
C. may
Grammar › View
Choose the correct verb from the choices
All of Edgar Allan Poe’s work (were, was) written in the 1800s.
A. were
B. was
First Conditional, Future Time Clauses › ViewYour friends won’t be happy ………….. they hear the good news.
A. if
B. as soon as
C. unless
Adjective and Adverb › View
The skaters performed most gracefully.
A. adjective
B. adverb
