My sister often helps me ________ Japanese.

When you see some waste paper on the ground, you should _______ and put it in the trash bin.

--- Would you like to go to the concert with me?  --- I’d love to. But I’m a little tired. I prefer      at home rather than         out.

--Do you have a _____? -- Yes, I _____ at a clothes shop.

My father usually       the subway to work, but today he goes to work     a bus.