I often see some children _______ in the park on Sundays.

Luckily ______ to be no one under the treewhen it broke down

We had really smoggy December this year — I can’t remember winter when air was polluted so severely

Spring Festival is on its way.—Yeah. Are you going with your family during the holiday

I am afraid the room is for us to live in.— Yes, it is. But let’s make do (将就) with it.