lt's imoortant______ a foreign language.A.of us to learn B.for us learn C.of us learning

问题描述:

lt's imoortant______ a foreign language.A.of us to learn B.for us learn C.of us learning
D.for us learning

正确答案是 for us to learn
固定句型:It's +形容词+for sb to do sth .