(2013·江西，24)What a terrible experience！________，you're safe now—that's the main thing.

______ acupuncture developed, the simple “bian stones” were replaced first by stone  and pottery needles, and ________ by metal needles.

With his mother’s good care, the boy is _____ recovering from his heavy cold.

However weak we are，we can still do something against the powerful nature so long as we are     prepared．

I woke up with      bad headache, yet by      evening the pain had gone.