it is left to sb.to do sth.
it is adj.of sb.to do sth.it is adj.from sb.to do sth.
It is possible for sb(sth) to do sth
请问,It is up to sb.to do sth.
是sth is important to sb还是 it is important for sb to do sth?
"It is+adj.+to+sb.+to do sth." 和 “It is + adj.+for +sb.+to d
be important to sb.与It is important for sb.to do sth.与 sth.i
sb.spends some time doing sth.it is+adj.+for sb.to do sth.it
it is time to和see sb do sth造句
造句It is+a.+for sb.+to do sth.
It is adj 造句 for sb to do sth 造句
It is typical of sb to do sth
Is it necessary for sb to do sth 同义句