Select the most appropriate option to fill in blank No. 9
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. will be.
Will be is used for future continuous form of a sentence. "Will be" + Verb + Time.
We can use “will” to talk about the future. We also use will to make predictions, talk about decisions, and to make promises, offers, requests and threats.
Ex:- She will be happy with her exam results.
Therefore the sentence will become:- The change in timings will be effective for a period ...