Even if there is no scientific proof secondhand smoke causes cancer, there is no reason why nonsmokers should be forced to take this risk.
My life has been _____ with many milestones and accomplishments of which I am proud.
Although some unexpected difficulties have ________ in the process, we are confident that we can handle them.
As we all know, the problems of environmental pollution facing us today are far from ____.
He presents a new _____ to learning a foreign language, which I think is of great value.
He describes everything in _______ order, which makes ________ excellent impression upon us.