However, at times this balance in nature is disturbed, _______ a number of possibly unforeseen effects.

Dick has a bad cough because of smoking.—Why doesn’t he ？

ng the voice, and not the appearance” makes theshow—The Voice of China ________from the numerous other reality shows in China

Let’s go to the zoo and see the pandas first.——______________________.

The meeting achieved_____ a short statement, leaving many details to be worked out later [ ]