1 didn’t know ______ they got to know each other．

The time and effort he has devoted during the past few years________ trees in that remote area is now considered to be of great value．

I’m sure you’d rather she went to school by bus，？

Is there a sports meeting in your school–Yes. It in November every year.

Whilethe government says there is a(n) ________supply of houses，prices of apartments have been going upthese years.