i can't find the key__front door A in B of C to

问题描述:

i can't find the key__front door A in B of C to

C

to
the answer to the question,固定用法哈

i can't find the key__front door
选C
【key to the door】
门的钥匙
to介词固定搭配

C
key,ticket,answer等都用to