(A) as extending
(B) as the extent
(C) to be an extent
(D) to be an extension
(E) to extend
Solution:
Idioms
“Regard X as Y” is the correct idiom.
Hence, C, D, and E are incorrect.
B: “nations regard airspace as the extent upward…” is awkward.
A: “nations regard airspace as extending upward as high as…” is the best choice.
“airspace” is regarded as still extending (ongoing process).
Sentence Correction - 1000 Questions with Solution:
