[ Grammar ]
I have no idea ____ left the lights on all night.
A. Who
B. Whom
C. Whose
Select your answer:

Random Topics:
Too or EnoughCausative VerbSuperlative & Comparative AdverbsGrammar and StructureGrammar - must & have toPassive SentencesAdverbCommasAsking for and Giving OpinionFuture Perfect ContinuousOther quiz:
If vs. Whether › ViewParents need to decide on … a book is appropriate for their kids.
- if
- whether
- if/whether
Modals and Responsibilities › View
You ___ get enough sleep.
A. must
B. need to
C. ought to
D. responsible for
