spend more time in learning to?为什么不是spend on?

spend more time in learning to?为什么不是spend on? L spend more time practicing piaying softball than any other student in my class（改成同义句） why don't you spend more time in studying More time should be (spend) in doing exercise They spend more time before television than in parks. 翻译 spend more time ____ English L can spend 10 more minutes in bed（同义句） L can spend ____ ____ ____ in bed L can spend 10 more minutes in bed（同义句） L can spend ____ ____minutes in bed we should spend more time in work 这句话的语法错误是什么 before i take part in the sports meet i'll spend more time i train对么 spend time in=____________ could you spend more time with I should better spend more time reading In fact ,children spend ＿＿ (more and more / much and much) time watching TV.答案是前者, The parents said they （would spend） more time with their children in the following year.括号中要用would spend,这是为什么,有什么语法么? 一道英语首字母填空题!maybe l do not stay with my dog o____enough,so l will spend more time with it. sb.spend time(in)doing sth. spend time playing in the snow