-- It's so cold! Why are your windows still open? --- Oh, they _______.
The village has developed a lot ___ we learned farming two years ago.
I was not _______her presence till she spoke to me.
The reason ___ he can’t come is ______ he has to work late.
This kind of desk can be _______ to the height you need. Besides, it is not expensive at all.
We all think it is Mr Wang as well as his parents that _______ for his son’s bad performance at school.