I saw ________ playing in the street at that time．

1. A.
   them
2. B.
   they
3. C.
   their
4. D.
   theirs

I saw ________ playing in the street at that time.

[　　]

I saw ________ playing in the street at that time.

[　　]

 I saw Li Ming ________ near the river on my way home.

A. plays                                    B. playing

C. to play                                  D. played