Helen ______ go on the trip with us, but she isn’t quite sure yet.
We shouldn’t have spent so much money visiting here; the scenery is ________ beautiful.
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.