Question

Choose the best word/phrase to complete each sentence.

Shekhar forgot _____ the lights before he left.

• A. turn off
• B. to turning off
• C. to turn off
• D. turned off

Answer 1

The correct option is C to turn off

Here, "to turn off" is the correct grammatical construct and fits the given sentence. As the sentence is in simple past form, the blank should also be filled up with simple past: "Shekhar forgot to turn off the lights before he left". Thus C is the answer.