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

I got to the office earlier that day,   the 7:30 train from Paddington

These diagrams are especially helpful when we have a concrete problem ______ at hand.

Tina is the only foreigner ________to the evening party last night.

English is a language ______ in many countries.