i can't find the stamp.i must have put it in ( )

i can't find the stamp.i must have put it in ( ) I (put) it in the drawer yesterday but I can't find it now. I can't find my watch .but it must be s____ in the house 横线应 I can't find my wallet .I think I must have d____ it somewhe i can't put it in words I could always put up the boy if he can't find the room in t ——I can‘t find my pen.——Don’t worry.You must put it s_____ ( 20.I can’t find my dictionary now.Tom must have taken it by I can＇t find my watch,but it must be （）in ... I forget to put the milk in the fridge it must have gone I can't find the key to my office,I( )have lost it on my way I have looked for the book e_ ,but I can't find it