The little girl who got lost decided to remain _________she was and wait tor her mother. 

She is very dear to us. We have been prepared to do ______  it takes to save her life.

It just isn’t fair_____ I was working as a waiter last month; my friends were lying on the beach. .  
A whenever          B. though     C. for         D. while

______ the police thought he was the most likely one, since they had no exact proof about it, they could not arrest him.

She had just finished her homework ____ her mother asked her to practice playing the piano yesterday.

Could I speak to ______ is in charge of International Sales please?

But I want five thousand dollars _________. I'll need some operating cash, right?

A serious study of physics is impossible     some knowledge of mathematics.

_____ small, the company has about 1000 buyers in over 30 countries.

It was a real race _______ time to get the project done. Luckily, we made it.