把括号内的词语放在句子适当的位置,重写句子.She is in a red dress. (often)He is the first to come.(always)He is careless in work . (seldom)

She is often is a red dress. / She often wears a red dress.
He is always the first to come. / He always comes first.
He is seldom careless in work.

都是副词，全放在is后面就行了

she is often in a red dress
he is always the first to come
he is seldom careless work

She often in a red dress.她经常穿红色的裙子。
He always the first to come.他总是第一个来。
He seldom careless in work.工作中他很少粗心。