[ 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 › ViewChoose the correct sentence.
A. She am playing football.
B. She is playing football.
C. She are playing football.
D. She playing football.
Grammar › View
Manuel and Brayan don’t ________ how to play soccer like CR7.
A. knows
B. know
Your 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
