Об­ра­зуй­те от слова SERIOUS од­но­ко­рен­ное слово так, чтобы оно грам­ма­ти­че­ски и лек­си­че­ски со­от­вет­ство­ва­ло со­дер­жа­нию тек­ста.

Thelma __________________ wanted to swim. And she did! By age ten, she could swim almost as fast and as well as her dad.