___________ we can have clean drinking water lies in ___________ effective measures will be taken by the government about water pollution.
—what do you think of Bill? —He is a hard-working student and he always ____himself in study.
we were all happy _____ 51 gold medals in all in the 29th Olympic Games.
We trust you; only you can ______ him to give up smoking.
Beyond the river_____.
The president said the report didn’t ______ his new own ideas.