Question

His telephone was disconnected because he forgot................ for it Fill in the blank.

• A. having paid
• B. paying
• C. to have paid
• D. to pay

Answer 1

Answer:

D. to pay

The correct sentence would be:

"His telephone was disconnected because he forgot to pay for it."

The phrase "forgot to" is used here, as it's followed by the base form of the verb ("pay").