Question

---I ________ this morning，but he could not come．

---Well，we'd better go and _________ at his office．

1. A.
   called him；call on him
2. B.
   called on him；call him
3. C.
   called at him；call
4. D.
   called him；call at him

Answer 1

A
解析：
call可表示“給……打電話”，根據(jù)會話的語境，第一空應(yīng)填 called him；
call on sb．表示“拜訪某人”，是固定搭配.答案為A.