They _______ all the details of the plan time and again to make sure that the project went smoothly.

When the question _____ at the meeting, no one could answer it.

You won’t be______ by the host to the wedding ___ you are a good friend of his.

 In some developed countries, larger population is ______________ in their big cities.

My mother asked me where _____, and I told her that I was going to buy some food.