[ Grammar ]
He must have ___ the keys at home.
A. leave
B. left
C. leaving
D. leaves

Random Topics:
-ed/-ing AdjectivesComparative AdverbsAbstract NounsPresent and Past Perfect TensesSentence LabelingFrequency AdverbsGerund, Infinitive & ModalsCoordinating and Subordinating ConjunctionsMixed Present TensesTenses & PrepositionOther quiz:
Grammar › ViewThe magician stopped ______ tricks when he realized his audience had disappeared.
A. performing
B. perform
C. to performing
D. to perform
Modal Verbs › View
– Why isn’t John at work yet?
– I don’t know, he _____________ the train.
A. must have missed
B. might have missed
C. should have missed
D. might not have missed
Grammar › ViewIf you press this button, the animals …. .
A. move
B. are moving
C. moved
Gerunds and Infinitives › View
Jenny doesn’t mind _______ on the sofa.
A. slepp
B. sleeps
C. sleeping
D. sleps
