选出每句中错误的一项，并在横线上改正。 1．There isninetycomputers in my school. （_______）__________
A B C
2．All of them are happily. （_______）__________ A B C 3．Wearehad a party. （_______） __________ A B C 4．How manypeoplesare there in the park? （_______） __________ A B C
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