按要求完成下列各题。(20分)
⑴These are rulers．(就画线部分提问)
________ are these?
⑵Goslings can swim.(改为一般疑问句)
________ goslings ________？
⑶Can you read English? (作肯定回答)
________，________ ________．
⑷They are ducks.(改为否定句)
They ________ ducks.
⑸is，know，I，their，a，mother，duck(连词成句)
________________________________________________________________________