[ Auxiliary Verbs, if, unless and Modal ]
You __ have known the answer to that question.
A. must
B. shall
C. could
D. might
Random Topics:
Verb Tenses and ModalsPast Continuous and Past Simple TenseGrammar Pronoun and Singular Plural NounPrepositions after Verbs and AdjectiveGrammar and Verb TensesGrammar: is/are/was/werePassive SentenceConditionals and WishesParts of SpeechUnderstanding Product Packaging and TensesOther quiz:
Grammar › ViewComplete each sentence by adding the adverb in the form indicated: Kayla swam _____ than her sister. (frequently, comparative)
A. most frequently
B. frequently
C. more frequently
D. frequenter
Phrasal Verbs › View
enter
A. go in
B. go by
C. go ahead