1）不是很清楚,sorry.
2)2+5y=3,4^x*32^y=2^2x+2^5y=2^(2x+5y)=2?=8
3)The twins were born in Britain,weren't they?
4)What other places did you travel to?
5)Shall we work hard at english from now on?
改错
1)Will he has an apple or an orange（后面是问号还是句号?）
问号就改成will he have an apple or an orange?
句号就改为He will have...
2)in hospital(in hospital 住院 in the hospital 在医院里)
3)去掉is,这里sounds作为系动词
4）such改为so,so后接形容词
5）The bus stop is far away from our school
far away from ..,离某地很远