“XiJinping's report, ” a smile on his face, he continued, “_____ to several hot topics, discusses how to increase peasants' income.” 

Deeply       his unhappy childhood, the boy’s         seemed quite odd and strange.

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

 When ______, the new railway will run for 250 miles. 

_____with what they had done, we felt we still had too much to do.