1. —— I _____ the papers and then found some spelling mistakes.
—— You can never be too careful.
A. looked for B. looked out C. went through D. looked down
2. Mr. Brown _____ an excellent plan at the meeting.
A. came up B. came back C. came about D. came up with
3. ――What’s up? Mary, you look so _____?
――I can’t find the key, and I can’t enter my room.
A. happy B. upset C. excited D. calm
