The scientists are studying the effects of human activities______the environment.
It took her a while to adjust to __________alone after the divorce(离婚).
There is so much noise in the yard that I can’t ________ my attention on my work.
—______ he said at the meeting made everyone present angry.— Yes.We all ______ him of his rudeness.
_______it not been for the free ticket, I would not have gone to the cinema.
The number of people invited __________fifty, but a number of them__________ absent for different reasons.