Human beings are ________ greatest threat to survival of endangered species.

It is of great ________ to show your interest and politeness when you are having a job interview.

When I got to the office, I ----------- that I had forgot to lock the door.

My daughter ------------- university last June.

 Pam was always afraid ------------ cooking.

 I’m hot because I ------------- for hours.

When you --------- your work, you may leave the room.

 If I --------- a flower I would be a sunflower.

Now I’ve decided --------- how to do it.

I’ll need ------- some music to dance to.

 “Do you need help with your English?” “If I do, I ------ you.”