twice a year, whether it is a car ,a bus or a truck, is therule that every driver must obey in this city.

It is a long time I saw you last time.—Yes. And it will be a long time we see each other again.

Can you play the violin —_____. But I can sing.

A wonderful idea ________ me that day when I met with a tough problem，.

The audience waited until the curtain rose andthen_____ laughter at the sight of the funny actor.