It is important---us ---English well.A of,to learnB for,to learnC to,to learnD with ,learning
问题描述：
It is important---us ---English well.
A of,to learn
B for,to learn
C to,to learn
D with ,learning
答
B
答
b
答
it is important for sb to do sth
因此B
答
B
学好英语对我们非常重要
答
B for,to learn
It is adj.for sb.to do sth.
句型.