Впрямую речь нужно..she told us to sit down and keep quite . и второе предложение в косвенную речь: : . he said to jane ,"have they found his bicycle today? "

1 She told to us, "Sit down and keep quite"
2 He said Jane that they have found his bicycle today
Наверное так 

1. She told: "Sit down and keep quite"
2. He asked Jane if they had  found his bicycle that day.