Bear in _____ that tomorrow is our dearmother’s birthday．

s _____ a great deal of money, hoping that she can travelaround the world after she retires.

Such good use has been ________ his spare time ________ his English has improved a lot.[ ]

By around 900 AD,there were many places in Northern Europe______the Vikings chose to live.

This is Bob. He’s the person I ____ my last letter.