It is worthy to do sth.
It is worthy to do sth.
It is worthy to do sth有这种用法对吗?
worthy to do sth还是worthy to be done sth哪个对?
it is n.to do sth.
It is the first ...to do sth.
it is worth to do sth.
It is a pleasure to do sth.
It is times to do sth造句
It is good idea to do sth...
it is+adj+to do sth.意思
It is fun to do sth造句
it is time to do sth过去式