【单选题】【消耗次数：1】
He ____ have left the campus, for I saw in the classroom just a minute ago
①
mustn’t
②
shouldn’t
③
couldn’t
④
oughtn’t
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【单选题】
—Where is John? I couldn’t find him.— .
①
He is very busy
②
I suppose he could have gone to the meeting room
③
I couldn’t agree more
④
He is good.
【单选题】
There was so much noise in the classroom that the teacher couldn’t make himself _______.
①
heard
②
hearing
③
to hear
④
hear
【单选题】
____ by this, he couldn’t say anything.
①
Satisfied
②
Feared
③
Frightened
④
Encouraged
【单选题】
2.I couldn’t understand why he pretended ______ in the bookstore.
①
to see me not
②
not to see me
③
not see me
④
to see not me
【单选题】
5. Without your help, I couldn’t ______ the details ______.
①
work…at
②
work…out
③
work…on
④
work…up
【单选题】
They talked in whispers, but still, I couldn’t help but __________ their conversation.
①
overhear
②
to overhear
③
overhearing
④
overheard
【单选题】
I couldn’t ( ) more with your excellent taste of music.
①
refuse
②
accept
③
replace
④
agree
随机题目
【多选题】
以下（）是数字经济的特征。。
①
数据信息资源逐步成为新的关键要素资源
②
数字技术创新是数字经济持续发展的源动力
③
平台化是数字经济主要产业组织形态
④
产业融合是数字经济主要表现形式
⑤
多元共治是数字经济时代必然的治理要求