[ Pronouns ]
I heard someone at the door but wasn’t sure __________ it was.
A. what
B. which
C. whom

Random Topics:
Gerund, Infinitive, Bare VerbIntermediate GrammarGrammar - Verb FormsVerb ConjugationInfinitiveGRAMMAR - Could / Could notVerbals and GerundsGrammar on ConditionalsConjunctive Adverbs and PunctuationPresent Perfect Simple & Present Perfect ContinuousOther quiz:
Grammar › ViewThe meaning of an idiom “the apple of one’s eye.”
A. A person who is considered as favourite
B. A person who likes to eat an apple.
C. A person who becomes happy by seeing an apple.
Gerund vs. Infinitive › View
Remember …….me the book I gave you last week. I need it for a project
A. To give
B. Give
C. Giving
“Yeah, I’ve been to Greece.”. My friend told me that he ________ to Greece.
A. been
B. had been
C. was
Vocabulary › View
More than a billion people all over the world are under the threat of desert .
A. ncrease
B. expansion
C. development
D. extension
