按要求完成下列各题。(28分)
（1）Those ducklings are cute.(改为感叹句)
________ cute those ducklings ________！
（2）Can birds fly? (改为肯定句)
________ ________ fly.
（3）This is a kangaroo.(改为复数句)
________ are ________．
（4）Are they sheep? (作否定回答)
________，they ________．
（5）Those are tigers.(改为单数句)
________ ________ ________ tiger.
（6）They are dogs.(改为一般疑问句)
________ ________ dogs?
（7）Those are goats．(就画线部分提问)
________ are those?