---Mike, please don’t forget to turn off the light when you leave.---Pardon?---I ________ forget to turn off the light.
27. _____ the teacher came in, everyone was quiet.
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 _____.