With time going by, we have come to realize that creativity is _________ it takes to keep a nation highly competitive.

What are you going to ____ when you grow up— I’m going to be a singer.

The boys are not doing a good job at all, are they—_____________.

What do you think of the music teacher?- she is an elegant lady, she can be extremely difficult to work with

The damaged building , so the people will have to look for other places to shelter themselves from the cold