The careless driver is _______ for the traffic accident_______ yesterday.

I don’t make ________ clear whenand where the parents’ meeting will be held.

What will the weather be like tomorrow— It ______ be rainy, cloudy or sunny. Who knows

Sensible people don’t think it is_______ to buy things which are not needed even at a low price.

（题文）In history, the Romanies were divided into different groups and developed their own languages, _____ there are now around sixty varieties.