It remained whether our class will go to the 2010 Shanghai Expo during this summer vacation.
The experiment shows that proper amounts of exercise, if _____ regularly, can improve our health.
_______I toured Zhangjiajie, I was deeply impressed with its beautiful scenery.
At the meeting they discussed three different______ to the study of mathematics.
The music, ___ which the active elderly were dancing, sounded a bit familiar ____ me.
Our teacher often makes a schedule to get herself _______ of what is to be done in the day.