Our plan is ______ in the countryside A.walk B.walking C.to walk 最好给一点解释,

问题描述:

Our plan is ______ in the countryside A.walk B.walking C.to walk 最好给一点解释,

to walk
这是to do sth 形式在句子中作表语
有两种含义:
1.解释主语内容,例如:My dream is to be an actor
2.表示一个将来发生的动作.例如:My idea is to go shopping this afternoon.