— Hello. Could I speak to Tom, please?

    — This is Tom speaking.

— Oh, it’s great. But I didn’t_________ your voice just now.

A. know             B. recognize            C. hear             D. listen to

—Hello. Could I speak to Tom, please?

—This is Tom speaking.— Oh, it’s great. But I didn’t_________ your voice just now.

1. A.
   know
2. B.
   recognize
3. C.
   hear
4. D.
   listen to

— Hello. Could I speak to Tom, please?

       — This is Tom speaking.

— Oh, it’s great. But I ___________ your voice just now.

A. didn’t know             B. didn’t recognize               C. didn’t hear        D. don’t know

— Hello. Could I speak to Tom, please?
— This is Tom speaking.
— Oh, it’s great. But I didn’t_________ your voice just now.