Some people here said they had ________ a boy in blue near the stop. But where can he be?

1. A.
   found; to play
2. B.
   seen; play
3. C.
   found; playing
4. D.
   seen; playing

Mr.Smith is on time for everything. How        he be late for the ceremony?

—What do you think of John?

—He’s a good boy, but he ______ be really stubborn at times.

A. can                                    B. might                       C. must                        D. need

His shoes are muddy. He        be working in an office all day.

A、mustn 't      B、 can't       C、needn't      D、 maybe

----.Let’s go to find our manager in his office.

----It’s so late at night .He          be there . Let’s make it another day .