There are a number of cases _______ family members or friends quarrel with each other and become enemies.

It was not until midnight_______they reached the small village.[ ]

We had different opinions how to help the children in the poor areas.

I have trouble ________ the new words.

I wonder if you could go with me to the supermarket.— Don’t disturb me. I ________ my daily report this morning and haven’t finished yet.