Find the error in the following sentence and replace it with the correct option given below:

No sooner did I reach London when it began to rain.

A. reach
B. Now
C. begin
D. than
E. raining

Choose the correct answer from the options given below:-

D only

The correct answer is Option (2) → D only

The error in the sentence is with the conjunction used. "No sooner...than" is the correct structure. Therefore, the correct option to replace the error is:

D. than

So, the corrected sentence would be:

"No sooner did I reach London than it began to rain."