[ Adverbial Clauses ]
He was writing to his friend when he ______ a noise.
A. was hearing
B. heard
C. had heard
D. hears

Random Topics:
Used to - Would - TensesWH Questions and Simple Past TenseConjunctive Adverbs and PunctuationSimple Verb TensesModal PerfectPast Narrative TensesPaired ConjunctionGrammar and Sentence StructureAuxiliary VerbsWish / If only ( Present)Other quiz:
Vocabulary and Tenses › Viewnever… such a funny joke
A. had I heard
B. I had heard
Vocabulary › View
_____ among team members is crucial for the success of any project.
A. Unity
B. Divide
C. Separation
D. Difference
Grammar › ViewLyla should be happy to get his call
A. rational
B. permission
C. capacity
D. suggestion
Modals › View
I…..sign the forms before I can officially start work on Monday.
A. had to
B. has to
C. have to
D. need