I+must+find+my+pencil+box为什么用find

I+must+find+my+pencil+box为什么用find Next to find my girl,I must really love her. I can't find my wallet .I think I must have d____ it somewhere I will find my 补全单词,是句子完整：My friend must be l( ).I can't find him. I can't find my umbrella.You __________it in the office.A.must have forgotten B.must have left C.must leave D.must forget I lost my school ID card I must fI lost my school ID card I must find it.Call ne at 685-6043,Thanks. found：I lost my school ID card.I must find it.Call me at 685-6034.Thanks.意思是什么 可不可以说Somehow I must find him. Oh,I must find the ticked.为什么要用must I(m ) find my watch I can' t find my I can find out my key my can find i(.) your,must,things,book,after,ofter,you buie,what,this,about,one can't,find,i,my,bag,red I can't find my watch .but it must be s____ in the house 横线应该填什么单词? 是I must find him.还是I must find the him . I can't find the key to my office,I( )have lost it on my way homeA would B should C must D ought to