During the week ____ he tried to collect materials for his article.

He wrote a letter ___ he explained what had happened in the accident.

This computer doesn’t work properly, because a certain virus has ____ the operating system.[ ]

Jack, I’ m very _____ with your cooking.It looks nice and has a ______ smell.[ ]

This is _________ best film I have ever seen. This means I have never seen_________ better one.