It is a paradox(自相矛盾) that in a rich country there should be many poor people.
Professor Smith, along with his assistants, __ on the project day and night to meet the deadline.
Could you please tell me where you bought the shoes __ yesterday?
. __ many times, but he still wouldn't listen.
He is one of the boys who _____ here on time. He is the only one of the boys who _____ here on time.
When I passed the entrance examination, my family __ me __ my successes.