He arrived (at) about 10 o'clock.请问,有没有这个at啊?为何?He will be back (at) about lunch time.之中有没有at呢?为何?

As soon as he arrived at home ,he began to do the homework.同义句._____ _____ ______home,.Upon ______ ______ ______,._____ _____ he arrived at home ,... He ___ home at 9 o'clock.A.came B.arrived at .要选哪个? He arrived _______here at half past threeA to B / c for d at until the game had begun——at the sports grounda had he arrivedb would he have arrivedc did he arrived should he have arrived并说出为什么 选择—— He often__school on time A.arrived in B.arrived at C.got D.got in arrived at 的同义词 Not until the game had begun _______ at the sports ground.(A) had he arrived (B) would he have arrived (C) did he arrive(D) should he have arrived怎么选?为什么 副词可以修饰介词短语么?He arrived in Washington at a ripe moment internationally. Tony arrived at school late that morning because he washed and dressed slowly英语翻译 He arrived in the city___a windy afternoon.A.in B.on C.at D.to IT was snowing when he arrived at the station是什么从句 怎样把He arrived at two o'clock 变否定句?还有一般疑问句、特殊疑问句 He arrived _______ good time for the concert.A on B in C at ti was snowing when he arrived at the station是什么从句 求翻译 He arrived at 10 o’clock on the night of the 5th. He was not___(bad)hurt and arrived at the church on time.咋填,原因 He arrived at tow o'clock改为一般疑问句|特殊疑问句 Peter called me ( )he arrived in Shanghai1.at once 2.the instant3.immediate4.instantly