Question

_______ the manager, you’d better call _______ his company．

1. A.
   Calling at; on
2. B.
   Calling on; at
3. C.
   To call on; at
4. D.
   To call at; on

Answer 1

C
“拜访某人”用“call on sb．”；“拜访某地”用“call at some place”。