[ Modals of Probability ]
Our dog hasn’t moved all day. It ………………….. be ill.
A. could
B. can’t

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Past Perfect vs Past SimpleDemonstrative PronounsSimple Past Tense (was/were)Modals for Necessity and SuggestionsWill and Will notCan vs be able toClauses and ConjunctionsModals and ResponsibilitiesSecond Type ConditionalCommon Grammar Mistakes and Spelling TipsOther quiz:
Grammar › ViewWhen I ___ at the party, everyone ___ a good time.
A. was arriving / had
B. arrived / was having
C. arrived / had
D. arrived / were having
Action, Helping & Linking Verbs › View
Trisha drives her car to the store.
A. Action
B. Linking
C. Helping