I can't find the key_my bike.填什么?为什么?

I can't find my key s______.I'm worried. key my can find i(.) I really don't know where I can find my lost key to the bike.(同义句) I've---all my pockets but I still can't find my key to the bike .Agone throughBsearched I can’t find the key _ the lock.How can we open the door A.of B.withC,for D.to I can 't find the key_____my house I'm afraid ______ (lose) my key.I can't find it now I'm afraid ______ (lose) my key.I can't find it now 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 I can't find my key.Maybe it is ___ (miss) I can't find the key _______ the bike,could you help me?A.to B.of C.for D.with选哪个? I can’t find I can't find 、-I can't find my key.Bob.Can you help me?-Sorry,I'm busy（ ） English. the key to my door___.i have looked for it every where,but i still__itA is missing ;can't find B has lost ; don't findC has lost ; haven't foundD has been gone ; haven't found为什么选A ---Can't you find your key to your bike?---_____.I have to borrow yours.A.Yes,I can.B.No,I can't I can find the I can't find the lbrary .What____ I ______(do)I can't find the lbrary .What____ I ______(do)