. If only I ________ how to operate an electronic computer as you do.
A．had knownB．would know
C．should knowD．knew
D
因為if only (要是…就要了) 其后的句子要用過去式表示虛擬語氣，由as you do可知，是與現(xiàn)在事實相反，所以選knew。
練習冊系列答案
相關習題

科目：高中英語 來源：不詳 題型：單選題

You might just as well tell the manufacturer that male customers _____ not like the design of the furniture.
A．mustB．shallC．mayD．need

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

The little girl        ,but her family was too poor at that time.
A．could go to school
B．could have gone to school
C．must have gone to school　
D．can have gone to school

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

We ________ our lives had it not been for the policeman.
A．would have lostB．should lose
C．might loseD．had lost

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

One of the requirements for the fire is that the material ________ to its burning temperature.
A．is heatedB．will be heated
C．would be heaterD．be heated

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

—Johnson，come and look at the sea！It's beautiful，isn't it?
—Absolutely！If only I ______here by the sea.
A．had livedB．livedC．liveD．will live

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

— What’s the matter with Peter?
— He was seen crying when he was coming out of the office. He ________ by the manager.
A．may be scolded B．should have been scolded http:/
C．must be scolded D．must have been scolded

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

The librarian insists that John _____ no more books from the library before he returns all the books he has borrowed.
A．will take　　　B．tookC．take　　　　　D．takes

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

You can’t imagine that a well-behaved gentleman ______ be so rude to a lady.
A．mightB．needC．shouldD．would

查看答案和解析>>

同步練習冊答案