Gun control is a subject ______ Americans have argued for a long time.
The conference was ________ fixed for the 10th, August, but later the unexpected landslide (泥石流) in Zhouqu in Gansu province, made us put it off.
It’s widely accepted that life is ___ there’s sunshine and water.
_____ we have enough evidence, we can’t win the case.
The teacher asked us not to______ our books or dictionaries when we are in the exam.
The manager wants to see progress in the company, and I am sure that he will_____.