Danby left a message with the professor_________he would call again in the afternoon.

Danby left a message with the professor_________he would call again in the afternoon.

1. A.
   who
2. B.
   that
3. C.
   as
4. D.
   which

Danby left a message with the professor_________he would call again in the afternoon.

A．who  B．that   C．as      D．which

Danby left a message with the professor ______ he would call again in the afternoon.

    A. who           B. that           C. as              D. which

Danby left a message with the professor ______ he would call again in the afternoon.

   A. who         B. that         C. as          D. which