The manager, ______his factory’s products were poor in quality, decided to give his workers further training.

A. knowing　　　　 B. known　　　　　 C. to know　　　　　 D. being known

The manager, _________ his factory’s products were poor in quality, decided to give his workers further training．

1. A.
   knowing
2. B.
   known
3. C.
   to know
4. D.
   being known

 The manager, ______his factory’s products were poor in quality, decided to give his workers further training.

  A. knowing          B. known            C. to know            D. being known

The manager, ______his factory’s products were poor in quality, decided to give his workers further training.

  A. knowing          B. known            C. to know            D. being known

The manager, ______ his factory's products were poor in quality, decided to give his workers further training.