I don’t know the reason _______ you were absent from the meeting, and I am not sure that someone will tell me the reason _______ you haven’t told me.
They said that they ______ a wonderful time in Beijing and they hoped to be there again.
______ so much electrical equipment,wood and paper in one place,there is a danger of fire.
______ your help,I got the first in the final-term English examination.
Some policemen were sent there to ______ the villagers ______ down the trees.
The delicious food at the hotel ______the uncomfortable rooms,so nobody complained.