I learned to skate quickly. At first, I fell down a few times, but now I fall down.
always
often
sometimes
seldom
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.
He shouted ________ his father when he found a snake in the forest.