I've _____ all the photos in the drawer, but I still can't find the one you need. [ ]

A. opened up

B. given away

C. handed out

D. looked through

— Where is Lily, Lucy? I cannot find her anywhere.

— She        have been off long. I saw her clean the window just now.[      ]

A. shouldn't

B. can't

C. mustn't

D. needn't