听音，补全句子。(12分)
（1）John is ________ in the river.
（2）—Is Ann ________ ________ ________？
—Yes, she is.
（3）—What is your ________ doing?
—He is ________ ________ ________ .
听音，补全句子。(12分)
（1）John is ________ in the river.
（2）—Is Ann ________ ________ ________？
—Yes, she is.
（3）—What is your ________ doing?
—He is ________ ________ ________ .
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