Что называют речной системой, бассейном реки?

She waved her hand before getting on the bus. 
Shee got on the bus and then she was looking at us through the window with tears in her eyes.

We have to get on because we still have lots of things to do.
She is ready to do literally anything just to get on in her life. 

As soon as my sister got off the bus, she gave me a big hug.

I don't get along with my cousins, they are very ill-bred children. 

I hope our secret won't get out. 

She has to get up at 6 o'clock in the morning. 

The criminals robbed the bank and then they got away from the police

She still can't get over the fact that she has failed her exam.