1) ______________________you pass me the salt, please? a) couldn't b) could c) culd 2) I wanted to do it, but I _______________________ a) could b) couldn't c) can 3) I ____________________________ go to the hospital last week. a) couldn't b) can't c) can 4) I tried, but I______________________ open the door. a) can't b) could c) couldn't 5) She ________________________ sing very well. a) is b) can't c) cudn't

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