It is known to us all that the People's Republic of China __________ on October 1,1949.
–Did you see ____ English teacher? --I saw him at ____ work in the office just now.
When ____ a new word, you’d better _____ a dictionary.
After the quarrel, I tried all my best to fix the misunderstanding between us, but all my efforts seemed ______.
- Better get down to your work, Jack. --- _____________.
I met him very late on Friday night, ______, early Saturday morning.