【正文】
ece ssary f or a poli c em an to __ ____ __ a uni form when he is on duty . 12 . My m o m al ways re m inds m e to __ _______ __ m ore cl ot hes in cas e of cat chi ng a col d. dress in wear put on ? ? 活學(xué)巧練 (二 ) ? Ⅰ . 詞形轉(zhuǎn)換 ? 13. Keep _________ (quiet), please! Talking is not allowed during the meeting. ? 14. I’m sorry to keep you ___________ (wait). I am so busy today. ? 15. Keep on _________ (go) and don’t stop. The higher you climb, the further you will see. ? Ⅱ . 單項(xiàng)填空 ? 16. The poor little boy bites his lip to keep him ______ crying. ? A. from B. to ? C. at D. for quiet waiting going A