[ Must and Might Modals ]
What does “must have” indicate in the sentence: “You must have left your keys at home”?
A. Suggestion
B. Possibility
C. Certainty
D. Permission
Select your answer:

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Grammar › ViewIdentify the linking verb in the sentence:
A rainforest is a wonderful place.
A. rainforest
B. is
C. place
Grammar › View
The doctor gave me a __________ for some medicine yesterday.
A. note
B. receipt
C. prescription
D. recipe
