The old man is a good swimmer,and even now he often swims ________ Tuojiang River after supper.
Looking ________ the window,you can see a lot of boys playing on the grass.
Look,they are ________ the picture on the wall.
The young mother sat down and watched her child ________ a lovely white cat.
—When did you have your school trip? —________.
Oh,you are here.I ________ you came back.