—How long are you staying? --I don’t know. _____A. That’s OK. B Never mind. C. It all depends. D. It doesn’t matter.
---- How do you like this restaurant ?----________, though there are various dishes !
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.