[ Modal Verbs ]
I’m 100% certain this is his backpack.
This __________ be his backpack.
A. could
B. might
C. can’t
D. must

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Tenses and Word FormationAdjectives with PrepositionGrammar - ConnectorsWh QuestionsGrammar PhrasesUnless If First Conditional3rd Person SingularGrammar AssessmentSimple TenseInfinitives and GerundsOther quiz:
Modals › ViewWhich sentence uses a modal verb to show possibility?
A. She can swim very fast.
B. He will finish his homework.
C. They must leave now.
D. It might rain tomorrow.
Grammar › View
Drivers can see the yellow buses ….. far away.
A. with
B. to
C. in
D. from
Grammar › ViewEvery part of the world _____ by now.
A. Was explored
B. Were explored
C. Are explored
D. Has been explored
Adverbs of Frequency › View
I … eat fish. I don’t like them.
A. usually
B. never
