—           do you like P.E.? —Because it’s fun.

—How often do you clean your classroom?  —_________．

--How do you like these two books? ---___________ of them are interesting. I want to read them again.

—Whose is the T-shirt?—It’s      .

---Have you finished your work yet?　---No, not yet. I think it’ll take _____ ten minutes.