I THINK I __(DROP) IT DURING THE CONCERT.中为什么填DROPPED不是WILL

I THINK I __(DROP) IT DURING THE CONCERT.中为什么填DROPPED不是WILL I think I dropped it during the concert so it might still be I think I d() my mobile phone during the concert I think I ____(掉) my backpark during the concert.I can't fin i think i ___(drop) my backpack during the part last night. I think it will not be a good way __ to the theater.A.by bus I think you dropped---------- “s” in writing “baseball”.填神马? What do you think of the concert?I really enjoy it.I did not I ______ (落下) my backpack during the concert last weekend. leaf I drop a tear in the ocean the day you find it I'will s 单句改错,I will think over it,为什么要改为think it over,over 是副词,但还是不是 She ____(drop) the tray when I ____(speak) to her dropped sp