Mum, would you please buy me an MP5 player? — If you can help do some housework the whole vacation, you ____ have one as a reward.

____ do you have a talk with your teacher, Tom?—Once a week. [ ]

As we all know, many Chinese words have come into English, ______ typhoon, tofu and kung fu.

What do you think of maths?–My favorite. It’s ______ for me to study of all the subjects in school.

David, turn off the TV _____ no one is watching it.—But it _____ off already! The music is from the radio.[ ]