You can never be_____ careful ; the road is icy and slippery.
. Men will ________ all the natural resources if they continue consuming them like that.
. An official said the plan had also taken migrant workers into account, ________ medical care would be provided even if they didn’t have a stable job.
. —I expected him to be nervous before his speech, but he was as cool as a cucumber. —He _______ it carefully.
. —Peter looks sleepy. —So ________ if you had a fever.
. —I can’t find my favourite magazine. —I saw Jack going away with ________, but I’m not sure whether it’s yours.