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将句子改为宾语从句
When does the train arrive?Please tell me．
Please tell me _______ _______ _______ _______．
将句子改为直接或间接引语
“It is so warm today. Let's go swimming.” he said.
Mother said, “What did your father say to you?”
将句子改为被动语态
The pianist gave the pupils some advice．
We may need these machine parts in our work．