think about doing还是do 还是什么
think about doing还是do 还是什么
think about 加 to do 还是doing?
think about后面是doing还是do?
是THINK ABOUT DO STH,还是 THINK ABOUT DOING STH?
think+do还是doing
think about 后加doing sth.还是 do sth.
think about doing 还是 to do?用法是?为什么?
是think to do还是think do 还是think doing
think doing还是think to do 还是都可以?
how about doing还是 to do
thinking about doing something还是to do?
what about加doing还是to do