Question:
We couldn’t solve the problem until our teacher arrived.
-
A.
Not until we solved the problem could our teacher arrive. -
B.
When our teacher arrived, we solved the problem. -
C.
Until our teacher arrived, we were able to solve the problem. -
D.
Not until our teacher arrived could we solve the problem.
Reference explanation:
Correct Answer: EASY
Inversion structure with “Not until”
+ S + auxiliary verb + not + V1 + until S + V2
= Not until S + V + auxiliary verb + V
Translated: We couldn’t solve the problem until the teacher arrived.
A. Until we solved the problem maybe our teacher came.
=> wrong meaning
B. When our teacher arrived, we had already solved the problem. => wrong meaning
C. It wasn’t until our teacher arrived that we were able to solve the problem. => wrong meaning
D. It was not until our teacher arrived that we were able to solve the problem. => true
=> Choose the EASY answer
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