A.
The very idea of doing homework on a weekend would've made us depressed.
B.
The very idea of doing homework on a weekend would of made us depressed.
C.
The very idea've doing homework on a weekend would've made us depressed.
D.
The very idea've doing homework on a weekend would of made us depressed.
A. The very idea of doing homework on a weekend would've made us depressed.
Explanation:
In answers C and D, the use of "idea've" does not exist. In answer B, "would of" is incorrect. Answer A includes the correct "would've" and the correct "idea" .
