typhoon用什么介词是a,an,the还是/

typhoon用什么介词是a,an,the还是/ unifrom前用什么介词,是an 还是a? there is _____ typhoon. (a,an,the,/) 问一道五年级英文题用介词填空：there is a typhoon coming（ ）the south china sea his 16th birthday last year前用什么介词 an office前用什么介词 为什么 an autumn afternoon前用什么介词 onion前用介词a还是an exciting前面介词用a 还是an a typhoon 是什么意思 an ad______ a nice picture 填什么介词 Mr.Green is a/an extremely strict teacher中的介词是用a还是an?直接就进原则吗？ 用介词填空：I got my diploma_____Chinese______on my 20th birthday.还有一道：I want to have an interview________the president. 用was、a、typhoon、there、?造句造一个问句 在某一方面有疾病,英文是用have an illness /sickness后加什么介词啊? 在具体某一天的早上用什么介词啊,是in还是on?（是写in还是on）the morning of April 18th. she was born the morning August 18th 介词用什么 Can you come at 10 a.m on Monday,April 24th?关于介词April 24th?前不用加on吗?还是说两个时间介词用同样的介词,并且相连,后面的就要变逗号呢?还有这个 Can the dentist see me now?翻译是牙科医生现在就不能