[ Modal Verbs ]
Perhaps Karl knows the answer to that question.
A. Karl might know the answer to that question.
B. Karl can’t know the answer to that question.

Random Topics:
DeterminersDependent ClausesGrammar - Capitalization and Possessive NounsAdverbs of Frequency & Simple Present TenseAsking & Giving OpinionHelping and Linking VerbsModals of DeductionPresent Perfect Simple & ContinuousPast Simple Negative & QuestionsPresent Perfect Simple & Present Perfect ContinuousOther quiz:
Vocabulary › View(noun) the ability to think about things that are not real; the ability to form a picture in your mind of something that you have not seen or experienced
A. imagination
B. couch
C. compare
D. divide
Grammar › View
The Japanese ______________ their shoes when they go home
A. greet
B. remove