The stronger the ______ is, the more quickly a person will learn a foreign language. That is to say, it is up to whether he has an interest in the foreign language.
26. She is very diligent. She often studies _____ into the night.
25. The article is too long, please cut _____ some unimportant details.
24. China Construction, an edition de luxe is not a weekly or bimonthly magazine but it comes _____ every season (quarterly).
23. Once you make a promise, you should carry it _____.
22. This is ____ interesting story I have ever heard.