Not until I read your letter ________ the true state of the affairs.
A．did I understandB．had I understood
C．I understoodD．I had understood
A
考查倒裝。否定結(jié)構(gòu)Not until置于句首時(shí)，主句要用部分倒裝，由此可以排除C、D兩項(xiàng)；此外，understand這一動(dòng)作和“read”幾乎是同時(shí)發(fā)生的，都發(fā)生在過(guò)去的某個(gè)時(shí)間，因此用一般過(guò)去時(shí)態(tài)。故A項(xiàng)正確。
練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：高中英語(yǔ) 來(lái)源：不詳 題型：單選題

For a moment nothing happened; then______ from the excited audience.
A．cheers cameB．did cheers com
C．cheers would comeD．came cheers

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：單選題

The door opened and in_______.
A．he cameB．came heC．did he comeD．he come

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：單選題

(2013·高考新課標(biāo)全國(guó)卷Ⅰ)The driver wanted to park his car near the roadside but was asked by the police________.
A．not to doB．not to
C．not doD．do not

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：單選題

(2013·高考新課標(biāo)全國(guó)卷Ⅱ)Only by increasing the number of doctors by 50 percent  ________ properly in this hospital.
A．can be the patients treated
B．can the patients be treated
C．the patients can be treated
D．treated can be the patients

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：單選題

—It's a pity that Andrew didn't want to go to the conference.
—________ willing to go，we could have paid all his expenses.
A．Had he beenB．Being
C．Was heD．He had been

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：單選題

—Do you hear Jim and Mary broke up?
—No，I haven't heard of it，and neither ________ about it.
A．can I careB．do I care
C．I careD．I can care

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：單選題

The sign says that children are admitted only if ________ by an adult.
A．to be accompanied　B．a(chǎn)ccompanying
C．a(chǎn)ccompanied　D．to accompany

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：單選題

Unsatisfied _____ with the payment, he took the job just to get some work experience.
A．a(chǎn)s was heB．a(chǎn)s he was
C．he was asD．was he as

查看答案和解析>>

同步練習(xí)冊(cè)答案