—— I can’t get through to the general manager’s office anyhow. —— The line is bu
题型：不详难度：来源：
—— I can’t get through to the general manager’s office anyhow.
—— The line is busy. Someone＿＿＿＿＿the telephone. | A．must use | B．uses | C．must have been using | D．must be using |
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答案
| D |
解析
| must be using表示此刻“一定正在使用……”。 |
举一反三
—— Could I use your telephone?
—— Yes, of course you ＿＿＿＿＿＿＿＿＿＿＿＿＿. | A．could | B．will | C．can | D．might |
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| It is surprising that he＿＿＿＿at the meeting. |
If only I＿＿＿＿＿how to operate a computer as you do! | A．had known | B．wou欤?know | C．should know | D．knew |
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Very loud noise＿＿＿＿＿make people ill or drive them mad. | A．should | B．can | C．need | D．must |
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—— May I leave the office before 5 o’clock in the afternoon?
—— No, I’m afraid you＿＿＿＿＿＿＿. | A．needn’t | B．shouldn’t | C．mustn"t | D．won’t |
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