In my pencil-box, _______ a pen, two pencils and three rulers.

The cattle _______ grazing on the grass.

---How often does the boy play sports?---__________

We live day by day，but in the great things the time of days and weeks ____ so small that a day is unimportant.

Across the Yangtze River ______ more than one bridge, the Nanjing Changjiang Bridge being the first one.