He failed in the exam not only his laziness but also he didn’t listen to the teacher

The entrance examination is approaching.It’s time we got down to________for it.[ ]

When _____ about one of the biggest concerns today, many people mention the sharp rise in prices [ ]

By talking with them，I get to know ________ Russian people see their country and the US.

has been popular _______ alot of children since the year before last