下列各句中加点成语的使用，全都正确的一项是（ ）①如果明知道这里隐患重重，却还是被束缚住了手脚，首鼠两端，一旦更多、更大的事故发生，恐怕要落个补救无门，追悔莫及。②在繁忙而紧张的高三学习中，父母见微知著的关怀，老师循循善诱的教导，使同学们备受感动和鼓舞。③为了进一步提高服务质量，宾馆领导规定，所有工作人员，对待每一位宾客都要相敬如宾，实行微笑服务。④大量转发的拜年短信，往往毫无个性和感情，却带有某种功利、庸俗的人际关系特点，因此很多人对拜年短信不胜其烦。⑤喜讯传来，这座小城万人空巷，人们兴高采烈地走上街头，扛出彩旗，打起锣鼓，在广场举行庆祝游行。⑥这次表演极为成功，不管是白发苍苍的老者，还是黄发垂髫的孩童，都被这盛大的场面深深地吸引住了。

Something special happened ________ Mary ________ the first day of school.

We were surprised to hear that the reason ________ she gave for her absence was ________ her mother was ill.—Yes.We saw her mother was at the supermarket that morning.

Anyang is a famous city ____has a long history and richculture .—I hope I can visit it some day in the future .

It’s _______ outside. Put on your thickcoat to keep you_______.