Though _____ in the accident, the bus driver did allhe could to help the passengers to safety.

下列各句中，没有语病的一句是（ ）

Dad,you have worked for so long time. Stop and have a rest.

She was so angry and spoke so fast that none of us understood _____ she said meant.

_____ to go upstairs to his room and rest awhile, but his aunt urged him to finish his homework first.