[ Modals ]
How would you express that it was likely that Watson was at the store?
A. Watson may have been at the store.
B. Watson must have been at the store.
C. Watson could have been at the store.
D. Watson should have been at the store.

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Grammar, Literature, and VocabularyPast Tense vs Present Perfect TensePresent Tenses: Simple vs ContinuousHave as verb and auxiliarySimple Past - Irregular Verbs-ed/-ing AdjectivesGrammar - Present Perfect with already, just, yetComparisonUnderstanding Product Packaging and TensesModals VerbsOther quiz:
Collective Nouns › ViewA ___ of ships
A. crowd
B. fleet
C. flight
D. school
Vocabulary › View
It’s hard to work with someone so ____. He only thinks about how things benefit him and never considers others.
A. considerate
B. selfish
C. dependable
D. shy
Modal Verbs › View“She ___ finish her project on time if she starts now.”
A. could
B. must
C. can
D. might
Grammar › View
The TV documentary was the … thing on TV last night.
A. most interestiest
B. most interesting
C. most interestier
