按要求完成下列各题。(10分)
（1）Is that a cow? (改为复数句)
________ ________ cows?
（2）Can ducklings swim? (改为陈述句)
________ ________ swim.
（3）These are_roosters．(就画线部分提问)
________ ________ these?
（4）They are hens and chicks.(改为一般疑问句)
________ ________ hens or chicks?
（5）can，this，a，bear，ride，bike (连词成句)
_____________________________________________________________.