Different cultural features of ethnic groups are____ one another and work out a melody.

The reason why he was late was _______ he had take a wrong bus.

Would you rather ______ there tomorrow—– No, I’d rather he ______ there instead of me.

I thought she had retired, but ________ she hasn’t [ ]

the opening ceremony, “Miss Smile”has won the hearts of Chinese Internet users after being caught _____ the samesmile for nearly 20 minutes