—Must we keep the window _______ all the time?—No, you don’t have to.
--Who is the girl ______ long hair and big eyes? -- Oh, it’s our new classmate, Betty.
Everyone in my family ________ a present at the Spring Festival.
---- What are you _____, Tom? ----- I’m ________ TV programs.
Kate and I _____ doing ______ homework now.
Listen! Someone _____ songs.