一个小小的英语问题

两个都对，语法没有错误。

副词的位置

副词可以放在动词后面，两种情况，紧跟动词或者在句子最后
如
He tried to leave quietly
He sat in the corner quietly

副词可以放在句首
如
Finally he got his book
Sometimes i feel like going home

副词可以放在句中,即主语和动词之间，或者紧跟be动词当Be动词为主要动词时，又或者紧跟第一个助动词
如 He usually plays better than his sister
She is usually here at Sunday
They would usually come by car

通常，如果只有一个直接宾语的话，副词放在直接宾语后面
We considered the problem briefly
而不要说 We considered briefly the problem

如果宾语比较长，副词可以放到动词后。

其实要看语境的

两个语法都没有问题，但是表达稍微有区别

always be busy - “总是变得很忙”
be always busy － “变得总是很忙”

连接上下文来考虑吧

前者对，副词放在助动词（had）和实意动词（be）之间，保证正确！

后面的对。
副词通常用在动词的前面，Be动词的后面。
always是副词，故放在be动词的后面。

应该是第一个对

1~3楼对