1. Although He often tells lies, many people believe him. 

2. She didn’t eat much ,so he was hungry.

2.  because She didn’t eat much, she was hungry.

3. Although It got dark, They continued to work.
4. Although He is very strong, I’m not afraid of him.

5. Although the traffic lights turned red, he didn’t stop his car. 

$1.$ $Although$ $he$ $often$ $tells$ $lies,$ $many$ $people$ $believe$ $him.$ 

$2.$ $She$ $didn’t$ $eat$ $much$ $,so$ $he$ $was$ $hungry.$

$2.$  $Because$ $she$ $didn’t$ $eat$ $much,$ $she$ $was$ $hungry.$

$3.$ $Although$ $It$ $got$ $dark,$ $They$ $continued$ $to$ $work.$
$4.$ $Although$ $He$ $is$ $very$ $strong,$ $I’m$ $not$ $afraid$ $of$ $him.$

$5.$ $Although$ $the$ $traffic$ $lights$ $turned$ $red,$ $he$ $didn’t$ $stop$ $his$ $car. $