各位大哥哥大姐姐谁能帮我用solve,regard,duty分别造个句子？很急的在此小妹谢谢了要简单的 快 明天要用的

solve,
1.解决; 解答
He finally solved the difficulty of transportation.
他终于解决了运输的困难。
2.解释, 揭示
When will the police solve the crime?
警方什么时候能破案?
The riddle couldn't be solved by the child.
这个谜语孩子猜不出来。

regard,
1.（尤指以某种方式）注视，凝视
Don't regard this very seriously.
对此不必过分介意。
They all regarded him highly.
他们都对他很尊重。
You never regard what I say.
我说的话你从不重视。

尊敬；敬重；器重
He has always regarded his father's advice very highly.
他一向很尊重父亲的意见。

注意；听从
He never regarded my advice.
他从来不听我的话。

关系；与…有关；涉及
This matter does not regard them at all.
这件事与他们毫无关系。

.注意；关注；关心
More regard must be paid to safety on the roads.
必须更加注意公路上的交通安全。
You have no regard for my feelings!
你没有考虑到我的感情！

尊重；尊敬；敬佩
I hold her in the greatest regard.
我非常尊敬她。

（用于信函的结尾或转达问候）致意，问候
Please give my regards to him.
请代我向他致意。

duty
1.职责
The committee carried out the duties entrusted to it.
委员会履行了赋予它的职责。
2.义务, 本分
I have a duty to perform.
我有一种义务要尽。
3.税收
New duties will be imposed on wines and spirits.
酒类要征收新税。

thank you for helping me solve this problem.多谢你帮助我解决这个问题。
you are right in this regad.在这一点上你是正确的。
it is the duty for the military to guard their nation.军人的职责就是保卫国家。

Please help me solve this math problem.
Please give my best regards to your brother.
It's your duty to clean the classroom every day after school.
希望有帮助~