I must have it repaired.为什么最后用过去式

my watch doesn't work .I must have it repard I must have it repaired.为什么最后用过去式 求大神做下名词从句十道题!1.Do you see _____ I mean?A.that B./ C.how D.what 2.Tell me_____ is on your mind.A.that B.what C.which D.why 3.We must stick to _____ we have agreed on.A.what B.that C./ D.how 4.Let me see _____.A.that can I repai I have toid you the truth.must i keep repeating it?为什么用Must? I must go now.It's late.为什么用must而不用have to? I must fine it. I can't find my wallet .I think I must have d____ it somewhere I parked my car right here but now it's gone.It ____ .A must have been stolen B must have stolenC may be stolenD must be stolen You must have missed it i like we must m____ plans for it i think you have the w____ number is your watch broken?yes.i must have it---- A.is your watch broken?yes.i must have it----A.fixed B.to be fixed I must have a problem it must have rained,＿it? I found this book when Icame to the classroom.It must must have been left by one the students someone must have taken my watch,i left it here on the shelf.must 是肯定的意思吗 my watch doesn't work.i must have my brother[------]it 为什么写repair it's getting late and i ____ go home A.must B.have to I must have it repaired.repaired在这句话中是什么成份