问题描述：
用所给的连词改写句子
the boy saw the dog and hid himself behind the door at once (as soon as)
It was such a heavy parcel that I couldn't lift it (so that)
the boy saw the dog and hid himself behind the door at once (as soon as)
It was such a heavy parcel that I couldn't lift it (so that)
问题解答：
我来补答展开全文阅读