they had a good time in the park last sun
theyhadagoodtimeinthepark lastsunday.
They have seen each other before.
Be here at six o'clock.
write it down in your notebook.
全部改为否定句.给好评!
人气：321 ℃ 时间：2019-09-27 06:55:23
解答
They didn't have a good time in the park last Sunday.
They haven't seen each other before.
Don't be here at six o'clock.
Don't write it down in your notebook.
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