Cindy shut the door heavily and burst into tears. No one in the office knew__________she was so angry.

     A. where           B. whether         C. that             D. why

Cindy shut the door heavily and burst into tears. No one in the office knew _____ she was so angry.

A. where          B. whether             C. that             D. why

Cindy shut the door heavily and burst into tears. No one in the office knew         she was so angry.

A. where            B. whether                  C. that                          D. why

Cindy shut the door heavily and burst into tears. No one in the office knew         she was so angry.

A. where            B. whether                  C. that                          D. why

 Cindy shut the door heavily and burst into tears. No one in the office knew         she was so angry.

     A. where               B. whether         C. that                 D. why     

Cindy shut the door heavily and burst into tears. No one in the office knew ______ she was so angry.（ ）

A. where　　　　 B. whether　　　　 C. that　　　　　　 D. why 　　　

Cindy shut the door heavily and burst into tears. No one in the office knew         she was so angry

1. A.
   where
2. B.
   whether
3. C.
   that
4. D.
   why