My brother works hard ________English,and I am talented _______math.应该填介词什么,是in 还是at,为什么

My brother works hardly.哪里错了? My brother is a w___,He works in a restaurant. my brother is a waiter.he works in a r . My brother is ( ) actor.He works very hard My brother works in a library.(变一般疑问句) 同义句转 Although my brother is very young,he works hard.My brother is very young,_ he works hard. My brother works in Shanghai c______ 根据首字母补全单词My brother works in Shanghai c______ （根据首字母补全单词） My brother works ___ IT.3QMy brother works ___ IT.a.at b.in c.for 说出三个的用法． My brother works harder ___ his english than beforeMy brother works harder ___ his English than before.A.in B.for C.to D.at My brother is_____actor.He works very hard.A.a B.an C.the My brother is a computer programmer and works in an IT c_____. My father doesn't works on friday Your brother don't like beautiful 错哪 My brother works in an office. 对in an office 提问 My brother works (in a shoe factoy).(对括号部分提问） My brother is a s .He works in his shop the whole day. ( )My brother works harder _______ his English project.A.on B.for C.to D.from ____ hard his brother works! My brother works in a firm .There are 2000 workers in tne firm（合并为一句）My brother works in a firm _____　there　are　2000　workers（填which还是where）求解析