下列各组字母中全部是元音字母的是 ____。A. a, e, o, r B. a, i, u, e C. o, u, e, n
_____ the development of the country, most people are living happily.
More than _____children took part in activities last month.
--- It was a heavy snow last night. Are we all here now?--- Yes, and _____ of us was late for school.
_____ you are, _____mistakes you will make in the test.
--- Did you see the film last night?--- Yes, I have never seen ____exciting film before.