Question

Fill in the blank with the most appropriate word.
There were no planes_____the past.

• A. In
• B. On
• C. At
• D. Over

Answer 1

The correct option is A In

The given sentence indicates a period of time.

At, on and in are used to indicate time. 'At' is used to indicate a particular point of time while 'on' is used to indicate particular date and date. In is used to indicate a period of time. Thus option a is the correct answer. Options B and C are incorrect.

Over is used to indicate a movement. Thus option D is also incorrect.