It is _difficult for us_ climb up the mountain A too to B ve

It is _difficult for us_ climb up the mountain A too to B ve 1.It's____difficult for us to climb up the mountain. It is ____ difficult for us ____ climb up the mountain . A. It is not difficult for me to climb the mountain. It is ()dangerous for children to climb a mountain the box is too heavy for me to A carry it away B lift it up 一道定语从句题.It is worthwhile to climb up to the mountain top fro To climb the mountain often is helpful for you=It is It is very d_____ for you climb the mountain alone. It is not diffcult for me to climb the mountain 同义句转换 climb up the mountain it was hard for me to climb the mountain为什么用was,用is可以吗?用to c