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

Random Topics:
How often - long - much - manyVerb + InfinitivePrepositions after Verbs and AdjectiveModal Verbs and Contrastive ConjunctionsPresent Simple & Present Continuous TensesPRESENT SIMPLE vs PRESENT CONTINUOUS + QUANTFuture Perfect TenseAdverbSentence CompletionGrammar speak,talk,say,tellOther quiz:
-ing / Infinitive › ViewSometimes, you just can’t avoid … what you don’t want to do
A. to do
B. doing
C. do
Grammar › View
Justin’s lunch had a negative ______________on his stomach. After all, twelve beefsteaks, a cheesecake, a pancake, and two pitted prunes are bound to ______________________ his system.
A. effect/effect
B. affect/affect
C. effect/affect
D. affect/affect
Grammar › ViewThe school _____________ was damaged during the flood is still closed.
A. who
B. whom
C. which
D. that
Conditionals and Modals of Probability › View
Unless you ____ louder, your classmates won’t understand you.
A. didn’t speak
B. had spoken
C. don’t speak
D. speak