连词成句（每题2分，共10分）
“trick or treat” , knock on , we , their , and , shout , doors
                                                                          .
have , on , October 31 , a party , the , we , always , evening , of
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the doctor , an apple , away , keeps , a day
                                                                          .
too much , are bad for , they , sugar , my teeth , have , and
                                                                          .
a gift , my , friend , I’d like , for , to buy
                                                                          .