——The research on the new bird flu virus vaccine is challenging and demanding. Who do you think can do the job?——____ my students have a try?
— I’ve read another book this week.— Well, maybe _____ is not how much you read but what you read that counts.
—How about your journey to Mount Tai ? —Everything was wonderful except that our car ____twice on the way.
The traffic lights ______ green and I pulled away.
Someone who lacks perseverance is unlikely to _______ a good researcher.
______ acupuncture developed, the simple “bian stones” were replaced first by stone and pottery needles, and ________ by metal needles.