I noticed an old man standing at the door just now.He seemed _____ for someone.A.waiting B.to have waited C.to be waiting D.to wait

I noticed an old man standing at the door just now.He seemed _____ for someone.A.waiting B.to have waited C.to be waiting D.to wait
I noticed an old man standing at the door just now.He seemed _____ for someone.
A.waiting B.to have waited C.to be waiting D.to wait

I noticed an old man standing at the door just now.He seemed _____ for someone.A.waiting B.to have waited C.to be waiting D.to wait
a