15. It is requested that each of the teachers invited ______ a performance at the. party.
How did all these _________?
While ____the dog, you should take care not to ____.Otherwise, it may be dangerous to strangers.
ItissaidthattherearemillionsofcamelsinIndiaand __ofthemisgrowing.
It’s exactly ______ we do ______ has changed the world.
I have not seen him ______ he left.