Tom was wild with joy _____the result of the exam.
The work he devoted his time to _____ worth praising.
The little girl who got lost decided to remain _________she was and wait tor her mother.
The fact has worried many scientists ______ the earth is becoming warmer and warmer these years.
She is very dear to us. We have been prepared to do it takes to save her life.
What the boy enjoys _____ to have a room of his own.