听录音，完成句子。l. This is a _________.One ________ .
2.These are _________.Many _________.
3.This is a _________.One ________ .
4.These are _________.Many __________ .
5. Boys and girls are __________.
6. Men,women and children are _________ .
l. man、 man2.men、men3.woman、woman 4. women、women 5. children 6. people
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