良好的生活习惯是一个人一生的宝贵财富。有人倡议:生活从家务劳动抓起,品德从孝心感恩抓起,文明从说话礼仪抓起。与此倡议反映的哲理相似的诗句是: ①奢靡之始,危亡之渐 ②轻者重之端,小者大之源 ③物必先腐也,而后虫生之④潮平两岸阔,风正一帆悬
—What’s electricity? —It’s a form of energy _______ we use in our daily lives.
A student need a ________ place to study, but , in fact, some parents are always watching TV at that time.
When the first settlers came to North America, they had to ________ the forest and found a way out.
—I'd like to go camping with you, but I have meeting _______. —If you don't go, ______.
—Why are the lights in the teachers’ office still on? —There ________ be some teachers working there.