Question

Combine the following sentences using a gerund:
I cleaned my entire room. I found my ring on the floor. [Advanced]

• A. I cleaned my entire room and found my ring on the floor.
• B. Even though I cleaned my entire room, I found my ring on the floor.
• C. Upon cleaning my entire room, I found my ring on the floor.
• D. None of the above

Answer 1

The correct option is C Upon cleaning my entire room, I found my ring on the floor.

While combining a sentence with a preposition, it is often followed by a noun or a gerund. When the given sentences are combined, a gerund/noun follows the preposition.
Option C uses the preposition 'upon' followed by the noun 'my entire room'. hence it is the correct option.
Option A does not make use of a preposition. It uses the conjunction 'and'. Hence A is incorrect.
Option B also does not use the preposition + noun/gerund combination. It uses the subordinating conjunction 'even though'. Hence B is incorrect.
Option D is incorrect because the answer lies in C.