一How long do you do exercise?一____________.
There are so many kinds of Mp4 in the shop. We can’t decide .
--- Do you know when hetomorrow? --- Don’t worry. I think as soon as he, he will give you a call.
--- Jim tookone-hour ride just now. What a short time he spent finishing such a long way! --- He is _____experienced rider.
- -I’m going to have a trip to Window of the World. ---_________.
--Have you returned the book to the library _______? --Yes, I have ____ returned it.