②→ Halloween is __ to be a more affordable event than Christmas. 
know
knew
known

③→ The most costly part of Halloween tends to be costumes and candy.

tends
tender
tenacious

④→ Pet __ are also investing in Halloween goods or buying costumes for their pets.
own
owner
owners

⑤→ Investors believe that the increase in spending has a __ effect on the economy.
construct
construction
constructive

⑥→ 名古屋伏見英会話スクール ロケイシャス (LoQuacious) invests in its students by __ a high-end Halloween event with special guests.
has
hold
holding

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Check the ビジネス 英会話 answers at 名古屋伏見の通い放題英会話スクールロケイシャス (LoQuacious)・(エルキュー LQ)!!