Before selecting the curtain for your newly-decorated house，it’s important to know what colors look great _______ the wall paper．

Is this the third time that you ________ late?

________ is your new watch? 一It’s only twenty yuan.[ ]

Beihai Park is a beautiful place that many people come to visit it every day.

When do you have P.E.? —We have it _____ Monday and Friday. [ ]