------Tom is very good at science,his brother is hopeless A While B When C If DBecause
问题描述:
------Tom is very good at science,his brother is hopeless A While B When C If DBecause
答
while Tom is very good at science,his brother is hopeless 他哥哥(对科学)没有一点希望,而Tom却很擅长.=his brother is hopeless while Tom is very good at science(while 表示转折)又如He is tall while his...