So they decided to return after they had quick lunch.But the wind这句话有2个错误,请帮我找一下,谢谢So they decided to return after they had quick lunch.But the wind blew so hardly that they couldn't control.

So they decided to return after they had quick lunch.But the wind这句话有2个错误,请帮我找一下,谢谢So they decided to return after they had quick lunch.But the wind blew so hardly that they couldn't control.
So they decided to return after they had quick lunch.But the wind
这句话有2个错误,请帮我找一下,谢谢
So they decided to return after they had quick lunch.But the wind
blew so hardly that they couldn't control.

So they decided to return after they had quick lunch.But the wind这句话有2个错误,请帮我找一下,谢谢So they decided to return after they had quick lunch.But the wind blew so hardly that they couldn't control.
So they decided to return after they had a quick lunch.But the wind blew so hard that they couldn't control.

they had 在中间加一个 had （after they had had quick lunch）
hardly 应该为 hard

So they decided to return after they had quick lunch.But the wind
blew so hard that they couldn't control.
我只找到一个啊，hardly 改为hard。可是 是不是return back??词组掉了一个词

but 不能当一个句子的第一个词用
hardly 的意思是 几乎不
你需要的是一个副词， hard 本身就是一个形容词兼副词