– Have they found out the _____ of the fire?-- Yes. It was a cigarette end that _____ the fire.
___________ was most important to her, she told me, was her family.
The man _______ the little boy and said , “You are so clever and lovely . I love you very much.”
________ work has been done to improve the people’s living standard.
He made another wonderful discovery , ____ of great importance to science.
Most villagers agree that horses are far more pleasant _______ than tractors, but they are less efficient.