Also,we never visit a friend's house without calling first.We usually make plans to see friends

问题描述:

Also,we never visit a friend's house without calling first.We usually make plans to see friends
改为复合句
Also,we never visit a friend's house______________call first

we usually make plans to see friends whose house we never visit without calling first.Also,we never visit a friend's house______________call firstunless we make plans and 浪费不少脑细胞,强烈要求加分!