52单词网 > 高中英语 > 高中英语题库 > -- I can’t get through to the general manager’s office anyhow. -- The line is bu

-- I can’t get through to the general manager’s office anyhow. -- The line is bu

来源:网络 时间:
-- I can’t get through to the general manager’s office anyhow. -- The line is bu

—— I can’t get through to the generalmanager’s office anyhow.

—— The line is busy. Someone _____ thetelephone.

A.must use

B.uses

C.must have been using

D.must be using

 

试题答案

【答案】

D

【解析】略