think about后面是doing还是do?
think about后面是doing还是do?
是THINK ABOUT DO STH,还是 THINK ABOUT DOING STH?
think about doing还是do 还是什么
think about doing 还是 to do?用法是?为什么?
think about 加 to do 还是doing?
是think to do还是think do 还是think doing
think about 后加doing sth.还是 do sth.
think+do还是doing
except后面是doing还是to do
by后面是加do还是doing
ask后面是加to do还是doing,还是do?
should后面是to do还是doing还是do呢?